Master List of awareness ribbon causes letter O. Each cause (below) has an associated color or pattern and a corresponding link to our awareness pins.

ALL CAUSES BEGINNING WITH THE LETTER O:

OBESITY AWARENESS RIBBON COLOR:

Yellow Awareness Ribbons for Obesity

OBESESSIVE COMPULSIVE DISORDER / OCD AWARENESS RIBBON COLOR:

Teal Awareness Ribbons for Obsessive Compulsive Disorder / OCD

OBSESSIVE COMPULSIVE PERSONALITY DISORDER / OCPD AWARENESS RIBBON COLOR:

Teal Awareness Ribbons for Obsessive Compulsive Personality Disorder / OCPD

OCCPITAL NEURALGIA AWARENESS RIBBON COLOR:

Teal Awareness Ribbons for Occipital Neuralgia

OCULAR ALBINISM AWARENESS RIBBON COLOR:

Blue Jeans Awareness Ribbons for Ocular Albinism - Listed by Global Genes®
Ocular Albinism is a rare disease. Rare diseases are also represented by Zebra Ribbons.

Ocular Albinism (OA1) is also known as:
• Nettleship-Falls Ocular Albinism
• OA1
• Ocular Albinism Type 1
• X-linked Ocular Albinism
• XLOA

Subdivisions of Ocular Albinism
• X-Linked Congenital Nystagmus 6 (NYS6)

What is Ocular Albinism (OA1)?
Ocular Albinism Type I (OA1), or X-Linked Ocular Albinism, is the most common form of Ocular Albinism. Ocular Albinism is a genetic disorder characterized by vision abnormalities in affected males. Vision deficits are present at birth and do not become more severe over time.

CATEGORIES

• Congenital and Genetic Diseases
• Eye Diseases
• Metabolic Disorders

Cause Classification: Medical

OCULAR CICATRICAL PEMPHIGOID AWARENESS RIBBON COLOR:

Green Awareness Ribbons for Ocular Cicatrical Pemphigoid

What is Ocular Cicatrical Pemphigoid (OCP)?
Ocular Cicatricial Pemphigoid (OCP) is a form of mucous membrane pemphigoid (a group of rare, chronic autoimmune disorders) that affects the eyes.

CATEGORIES

• Autoimmune Diseases
• Autoinflammatory Diseases
• Eye Diseases

Cause Classification: Medical

OCULAR HISTOPLASMOSIS AWARENESS RIBBON COLOR:

Zebra Awareness Ribbons for Ocular Histoplasmosis

What is Ocular Histoplasmosis?
Ocular Histoplasmosis is an eye disease that is a leading cause of vision loss, due to the spread of spores of the fungus Histoplasma capsulatum (histo) from the lungs to the eye where they lodge in the choroid (a layer of blood vessels that provides blood and nutrients to the retina).

CATEGORIES

• Fungal Infections

Cause Classification: Medical

OCULAR MELANOMA AWARENESS RIBBON COLOR:

Black and Navy Awareness Ribbons for Ocular Melanoma

Ocular Melanoma is also known as:
• OM

Subdivisions of Ocular Melanoma
• Choroidal Melanoma
• Iris Melanoma
• Uveal Melanoma

What is Ocular Melanoma?
Ocular Melanoma is an extremely rare form of cancer that affects the eye. Although rare, it is the most common primary cancer of the eye in adults. In most people, this cancer arises in a part of the eye known as the uveal tract. The uveal tract is the colored layer of tissue that is found beneath the white of the eye and is composed of normally pigmented cells and blood vessels.

CATEGORIES

• Rare Cancers

Cause Classification: Medical

OCULAR MOTOR APRAXIA, COGAN TYPE AWARENESS RIBBON COLOR:

Blue Jeans Awareness Ribbons for Ocular Motor Apraxia, Cogan Type - Listed by Global Genes®
Ocular Motor Apraxia, Cogan Type is a rare disease. Rare diseases are also represented by Zebra Ribbons.

Ocular Motor Apraxia, Cogan Type is also known as:
• COMA
• Congenital Oculomotor Apraxia
• Oculomotor Apraxia, Cogan Type
• Saccade Initiation Failure, Congenital

What is Ocular Motor Apraxia, Cogan Type?
Cogan Type Ocular Motor Apraxia is a rare congenital disorder characterized by a defect in side-to-side eye movements. The eyes do not move properly in response to stimuli or voluntarily. When affected infants are asked to fixate on an object to the side, their eyes will lag and then move in the opposite direction. In order to compensate for this, the infants will sharply jerk their heads past the desired object in an effort to bring the eyes to a position where they can view the object. When the eyes fixate on the object, the head will return to its normal position. Before these head jerkings occur, an infant’s inability to fixate on an object may sometimes be mistaken for blindness.

CATEGORIES

• Congenital and Genetic Diseases
• Eye Diseases

Cause Classification: Medical

OCULO AURICULO VERTEBRAL SPECTRUM AWARENESS RIBBON COLOR:

Blue Jeans Awareness Ribbons for Oculo Auriculo Vertebral Spectrum - Listed by Global Genes®
Oculo Auriculo Vertebral Spectrum is a rare disease. Rare diseases are also represented by Zebra Ribbons.

Oculo-Auriculo-Vertebral Spectrum (OAVS) is also known as:
• Facio-Auriculo-Vertebral Spectrum
• FAV
• First and Second Branchial Arch Syndrome
• Goldenhar-Gorlin Syndrome
• OAVS
• OAV Spectrum
• Oculo-Auriculo-Vertebral Dysplasia

Subdivisions of Oculo-Auriculo-Vertebral Spectrum (OAVS)
• Goldenhar Syndrome
• Hemifacial Microsomia (HFM)
• Oculo-Auriculo-Vertebral Disorder

What is Oculo-Auriculo-Vertebral Spectrum (OAVS)?
Oculo-Auriculo-Vertebral Spectrum (OAVS) refers to three rare disorders believed to be intimately related to one another and which represent the range of severity of the same disorder. These disorders are apparent at birth. As the name suggests, they involve malformations of the eyes, ears and spine. Oculo-Auriculo-Vertebral Disorder (OAVD) represents the mildest form of the disorder, while Goldenhar Syndrome presents frequently as the most severe form.

CATEGORIES

• Congenital and Genetic Diseases
• Ear, Nose, and Throat Diseases
• Eye Diseases
• Mouth Diseases
• Musculoskeletal Diseases

Cause Classification: Medical

OCULO DENTO DIGITAL DYSPLASIA AWARENESS RIBBON COLOR:

Blue Jeans Ribbons for Oculo Dento Digital Dysplasia - Listed by Global Genes®
Oculo Dento Digital Dysplasia is a rare disease. Rare diseases are also represented by Zebra Ribbons.

Oculo-Dento-Digital Dysplasia is also known as:
• Dento-Oculo-Osseous Dysplasia
• Oculodentodigital Dysplasia
• Oculo-Dento-Digital Dysplasia
• Oculo-Dento-Osseous Dysplasia
• ODDD
• ODD Syndrome
• ODOD
• Osseous-Oculo-Dento Dysplasia

What is Oculo-Dento-Digital Dysplasia?
Oculo-Dento-Digital Dysplasia is a rare disorder. Major symptoms of Oculo-Dento-Digital Dysplasia are webbing of the fourth and fifth fingers, an abnormally small transparent part of the eye, a slender nose with narrow nostrils, underdevelopment of the outer flaring wall of each nostril, defective enamel and dry hair that grows slowly.

CATEGORIES

• Congenital and Genetic Diseases
• Eye Diseases
• Mouth Diseases
• Musculoskeletal Diseases
• Skin Diseases

Cause Classification: Medical

OCULOCEREBRAL SYNDROME WITH HYPOPIGMENTATION AWARENESS RIBBON COLOR:

Blue Jeans Awareness Ribbons for Oculocerebral Syndrome with Hypopigmentation - Listed by Global Genes®
Oculocerebral Syndrome with Hypopigmentation is a rare disease. Rare diseases are also represented by Zebra Ribbons.

Oculocerebral Syndrome with Hypopigmentation is also known as:
• Cross-McKusick-Breen Syndrome
• Cross Syndrome
• Depigmentation-Gingival Fibromatosis-Microphthalmia
• Kramer Syndrome

What is Oculocerebral Syndrome with Hypopigmentation?
Oculocerebral Syndrome with Hypopigmentation is an extremely rare inherited disorder characterized by the lack of normal color of the skin and hair and abnormalities of the central nervous system that affect the eyes and certain parts of the brain. Physical findings at birth include unusually light skin color and silvery-gray hair.

CATEGORIES

• Congenital and Genetic Diseases
• Eye Diseases
• Mouth Diseases
• Skin Diseases

Cause Classification: Medical

OCULOCEREBROCUTANEOUS SYNDROME AWARENESS RIBBON COLOR:

Blue Jeans Awareness Ribbons for Oculocerebrocutaneous Syndrome - Listed by Global Genes®
Oculocerebrocutaneous Syndrome is a rare disease. Rare diseases are also represented by Zebra Ribbons.

Oculocerebrocutaneous Syndrome is also known as:
• Delleman-Oorthuys Syndrome
• Delleman Syndrome
• OCCS
• OCC Syndrome
• Orbital Cyst with Cerebral and Focal Dermal Malformations

What is Oculocerebrocutaneous Syndrome (OCC)?
Oculocerebrocutaneous (OCC) Syndrome, a rare genetic disorder, is apparent at birth. The disorder is characterized primarily by eye, brain, and skin malformations.

CATEGORIES

• Congenital and Genetic Diseases
• Nervous System Diseases

Cause Classification: Medical

OCULOCUTANEOUS ALBINISM AWARENESS RIBBON COLOR:

Blue Jeans Awareness Ribbons for Oculocutaneous Albinism - Listed by Global Genes®
Oculocutaneous Albinism is a rare disease. Rare diseases are also represented by Zebra Ribbons.

Oculocutaneous Albinism (OCA) is also known as:
• Brown Oculocutaneous Albinism
• Minimal Pigment Oculocutaneous Albinism
• OCA1
• OCA1A
• OCA1B
• OCA3
• OCA4
• OCA5
• OCA6
• OCA7
• Oculocutaneous Albinism Type 1A
• Oculocutaneous Albinism Type 1B
• Platinum Oculocutaneous Albinism
• Rufous Oculocutaneous Albinism
• Temperature-Sensitive Oculocutaneous Albinism
• Tyrosinase-Negative Oculocutaneous Albinism
• Tyrosinase-Positive Oculocutaneous Albinism
• Tyrosinase-Related OCA
• Yellow Oculocutaneous Albinism

Subdivisions of Oculocutaneous Albinism
• Oculocutaneous Albinism Type IA (OCA1A)
• Oculocutaneous Albinism Type IB (OCA1B
• Oculocutaneous Albinism Type II (OCA2)
• Oculocutaneous Albinism Type III (OCA3)
• Oculocutaneous Albinism Type IV (OCA4)
• Oculocutaneous Albinism Type V (OCA5)
• Oculocutaneous Albinism Type VI (OCA6)
• Oculocutaneous Albinism Type VII (OCA7)

What is Oculocutaneous Albinism (OCA)?
Oculocutaneous Albinism (OCA) is a group of rare inherited disorders characterized by a reduction or complete lack of melanin pigment in the skin, hair and eyes. These conditions are caused by mutations in specific genes that are necessary for the production of melanin pigment in specialized cells called melanocytes. Absent or insufficient melanin pigment results in abnormal development of the eyes, resulting in vision abnormalities, and light skin that is very susceptible to damage from the sun including skin cancer.

CATEGORIES

• Congenital and Genetic Diseases
• Eye Diseases
• Metabolic Disorders
• Skin Diseases

Cause Classification: Medical

OCULOPHARYNGEAL MUSCULAR DYSTROPHY AWARENESS RIBBON COLOR:

Blue Jeans Awareness Ribbons for Oculopharyngeal Muscular Dystrophy - Listed by Global Genes®
Oculopharyngeal Muscular Dystrophy is a rare disease. Rare diseases are also represented by Zebra Ribbons.

Oculopharyngeal Muscular Dystrophy (OPMD) is also known as:
• Autosomal Dominant OPMD
• Autosomal Recessive OPMD
• OPMD

What is Oculopharyngeal Muscular Dystrophy (OPMD)?
Oculopharyngeal Muscular Dystrophy (OPMD) is a rare genetic muscle disorder with onset during adulthood most often between forty and sixty years of age. OPMD is characterized by slowly progressive muscle disease affecting the muscles of the upper eyelids and the throat.

CATEGORIES

• Congenital and Genetic Diseases
• Eye Diseases
• Musculoskeletal Diseases
• Nervous System Diseases

Cause Classification: Medical

OGILVIE SYNDROME AWARENESS RIBBON COLOR:

Blue Jeans Awareness Ribbons for Ogilvie Syndrome - Listed by Global Genes®
Ogilvie Syndrome is a rare disease. Rare diseases are also represented by Zebra Ribbons.

Ogilvie Syndrome is also known as:
• ACPO
• Acute Colonic Pseudo-Obstruction
• Colonic Pseudo-Obstruction
• Ogilvie's syndrome

What is Ogilvie Syndrome?
Ogilvie Syndrome is a rare, acquired disorder characterized by abnormalities affecting the involuntary, rhythmic muscular contractions within the colon. Symptoms are similar to other forms of intestinal pseudo-obstruction and can include nausea, vomiting, abdominal bloating or swelling and constipation. The symptoms of Ogilvie Syndrome mimic those of mechanical obstruction of the colon, but no such physical obstruction is present.

CATEGORIES

• Congenital and Genetic Diseases
• Digestive Diseases

Cause Classification: Medical

OHIO STATE UNIVERSITY SUICIDE PREVENTION PROGRAM AWARENESS RIBBON COLOR:

Red and Gray Awareness Ribbons for Ohio State University Suicide Prevention Program

OLIVOPONTOCEREBELLAR ATROPHY AWARENESS RIBBON COLOR:

Zebra Awareness Ribbons for Olivopontocerebellar Atrophy

Olivopontocerebellar Atrophy (OPCA) is also known as:
• Hereditary OPCA
• Sporadic OPCA

What is Olivopontocerebellar Atrophy (OPCA)?
Olivopontocerebellar Atrophy (OPCA) has historically been used to describe a group of disorders that affect the central nervous system and are termed neurodegenerative diseases because they result in a progressive deterioration of nerve cells in certain parts of the brain. These conditions are characterized by progressive balance problems, progressive impairment of the ability to coordinate voluntary movements, and difficulty speaking or slurred speech.

CATEGORIES

• Nervous System Diseases

Cause Classification: Medical

OLLIER DISEASE AWARENESS RIBBON COLOR:

Blue Jeans Awareness Ribbons for Ollier Disease - Listed by Global Genes®
Ollier Disease is a rare disease. Rare diseases are also represented by Zebra Ribbons.

Ollier Disease is also known as:
• Dyschondroplasia
• Enchondromatosis
• Multiple Cartilaginous Enchondroses
• Multiple Enchondromatosis

What is Ollier Disease?
Ollier Disease is a rare skeletal disorder characterized by abnormal bone development. While this disorder may be present at birth, it may not become apparent until early childhood when symptoms, such as deformities or improper limb growth, are more obvious. Ollier Disease primarily affects the long bones and cartilage of the joints of the arms and legs, specifically the area where the shaft and head of a long bone meet.

CATEGORIES

• Congenital and Genetic Diseases
• Musculoskeletal Diseases
• Rare Cancers

Cause Classification: Medical

OPIOID EPIDEMIC AWARENESS RIBBON COLOR:

Purple Awareness Ribbons for Opioid Epidemic

OPSOCLONUS MYOCLONUS SYNDROME AWARENESS RIBBON COLOR:

Yellow and Blue Awareness Ribbons for Opsoclonus-Myoclonus Syndrome

Opsoclonus-Myoclonus Syndrome (OMS) is also known as:
• Dancing Eyes-Dancing Feet
• Dancing Eye Syndrome (Term usually used in UK)
• Kinsbourne Syndrome
• Myoclonic Encephalopathy, Kinsbourne Type
• OMAS
• OMS
• Opsoclonic Encephalopathy

What is Opsoclonus-Myoclonus Syndrome (OMS)?
Opsoclonus-Myoclonus Syndrome (OMS) is an inflammatory neurological disorder. It is characterized by associated ocular, motor, behavioral, sleep, and language disturbances. The onset is usually abrupt, often severe, and it can become chronic.

CATEGORIES

• Eye Diseases
• Nervous System Diseases

Cause Classification: Medical

OPTIC NERVE HYPOPLASIA AWARENESS RIBBON COLOR:

Blue Jeans Awareness Ribbons for Optic Nerve Hypoplasia - Listed by Global Genes®
Optic Nerve Hypoplasia is a rare disease. Rare diseases are also represented by Zebra Ribbons.

Optic Nerve Hypoplasia (ONH) is also known as:
• DeMorsier Syndrome
• ONH
• Septooptic Dysplasia
• SOD

What is Optic Nerve Hypoplasia (ONH)?
Optic Nerve Hypoplasia (ONH) is a congenital disorder characterized by underdevelopment of the optic nerves. The optic nerves transmit impulses from the nerve-rich membranes lining the retina of the eye to the brain. Most people with ONH have abnormal eye movements and vision can range from no light perception to good functional vision, or even full vision in one eye.

CATEGORIES

• Congenital and Genetic Diseases
• Eye Diseases

Cause Classification: Medical

OPTIC NEURITIS AWARENESS RIBBON COLOR:

Green Awareness Ribbons for Optic Neuritis

What is Optic Neuritis?
Optic Neuritis is an inflammation that damages the optic nerve, a bundle of nerve fibers that transmits visual information from the eye to the brain. Pain and temporary vision loss in one eye are common symptoms of Optic Neuritis. Optic Neuritis is linked to Multiple Sclerosis (MS), a disease that causes inflammation and damage to nerves in the brain and spinal cord. Signs and symptoms of Optic Neuritis can be the first indication of Multiple Sclerosis, or they can occur later in the course of MS. Besides MS, Optic Neuritis can occur with other infections or immune diseases, such as Lupus.

CATEGORIES

• Eye Diseases

Cause Classification: Medical

ORAL CANCER / LIP AND ORAL CAVITY CANCER / OROPHARYNGEAL CANCER AWARENESS RIBBON COLOR:

Red and White Pinstripes Awareness Ribbons for Oral Cancer, Lip and Oral Cavity Cancer and Oropharyngeal Cancer

What is Oral Cancer, Lip and Oral Cavity Cancer and Oropharyngeal Cancer (Head and Neck Cancer)?
The risk of Oral and Oropharyngeal Cancer is greatly increased by two factors:
• Tobacco use. Using tobacco, including cigarettes, cigars, pipes, chewing tobacco, and snuff, is the single largest risk factor for head and neck cancer. Eighty-five percent of Head and Neck Cancer is linked to tobacco use. Pipe smoking in particular has been linked to cancer in the part of the lips that touch the pipe stem. Chewing tobacco or snuff is associated with a fifty percent increase in the risk of developing cancer in the cheeks, gums, and inner surface of the lips, where the tobacco has the most contact. Secondhand smoke may also increase a person’s risk of Head and Neck Cancer.
• Alcohol. Frequent and heavy consumption of alcohol increases the risk of Head and Neck Cancer. Using alcohol and tobacco together increases this risk even more.

CATEGORIES

• Cancers

Cause Classification: Medical
Cross Reference: Cancer Causes And Their Associated Cancer Ribbon Colors

ORAL FACIAL DIGITAL SYNDROME AWARENESS RIBBON COLOR:

Blue Jeans Awareness Ribbons for Oral Facial Digital Syndrome - Listed by Global Genes®
Oral Facial Digital Syndrome is a rare disease. Rare diseases are also represented by Zebra Ribbons.

Oral-Facial-Digital Syndrome (OFDS) is also known as:
• OFDS Type I (Papillon-Leage-Psaume Syndrome)
• OFDS Type II (Mohr Syndrome)
• OFDS Type III (Sugarman Syndrome)
• OFDS Type IV (Baraitser-Burn Syndrome
• OFDS Type V (Thurston Syndrome)
• OFDS Type VI (Varadi Syndrome)
• OFDS Type VII (Whelan Syndrome)
• OFDS Type VIII (Edwards Syndrome)
• OFDS Type IX (OFD Syndrome with Retinal Abnormalities)
• OFDS Type X (OFD with Fibular Aplasia)

What is Oral-Facial-Digital Syndrome (OFDS)?
Oral-Facial-Digital Syndrome (OFDS) is an umbrella term for at least ten apparently distinctive genetic disorders that are characterized by defects and flaws in the development of the structure of the oral cavity including the mouth, tongue, teeth, and jaw; the development of the facial structures including the head, eyes, and nose; and the fingers and toes; along with differing degrees of mental retardation. OFDS Type I is the most common of all of these disorders, and it is quite rare. Each of the other types is extremely rare.

CATEGORIES

• Congenital and Genetic Diseases

Cause Classification: Medical

ORANGE RIBBON FOR AT RISK ANIMALS AWARENESS RIBBON COLOR:

Orange Awareness Ribbons for Orange Ribbon for At-Risk Animals

The orange ribbon is part of the Orange Ribbon for At-Risk Animals awareness campaign. Being an animal guardian and advocating for guardianship, not ownership, of companion animals is all part of this effort to change the common perspective of animals as property or unfeeling objects to revering animals as emotional creatures that need humans to protect them and in cases of household pets, be their guardian for their entire lives.

ORD'S THYROIDITIS AWARENESS RIBBON COLOR:

Paisley Thyroid Conditions Awareness Ribbons for Ord's Thyroiditis

What is Ord's Thyroiditis?
Ord's Thyroiditis is a common form of thyroiditis, an autoimmune disease where the body's own antibodies fight the cells of the thyroid.

CATEGORIES

• Autoimmune Diseases
• Autoinflammatory Diseases
• Immune System Diseases

Cause Classification: Medical

ORGAN DONATION / ORGAN DONOR AWARENESS RIBBON COLOR:

Green Awareness Ribbons for Organ Donation / Organ Donor

ORGAN TRANSPLANT RECIPIENT AWARENESS RIBBON COLOR:

Green Awareness Ribbons for Organ Transplant Recipient

ORNITHINE TRANSCARBAMYLASE DEFICIENCY AWARENESS RIBBON COLOR:

Blue Jeans Awareness Ribbons for Ornithine Transcarbamylase Deficiency - Listed by Global Genes®
Ornithine Transcarbamylase Deficiency is a rare disease. Rare diseases are also represented by Zebra Ribbons.

Ornithine Transcarbamylase (OTC) Deficiency is also known as:
• Hyperammonemia Due to Ornithine Transcarbamylase Deficiency
• Ornithine Carbamyltransferase Deficiency
• OTC Deficiency

What is Ornithine Transcarbamylase (OTC) Deficiency?
Ornithine Transcarbamylase (OTC) Deficiency is a rare X-linked genetic disorder characterized by complete or partial lack of the enzyme ornithine transcarbamylase (OTC). OTC is one of six enzymes that play a role in the break down and removal of nitrogen the body, a process known as the urea cycle. The lack of the OTC enzyme results in excessive accumulation of nitrogen, in the form of ammonia, in the blood. Excess ammonia, which is a neurotoxin, travels to the central nervous system through the blood, resulting in the symptoms and physical findings associated with OTC deficiency.

CATEGORIES

• Congenital and Genetic Diseases
• Metabolic Disorders
• Nervous System Diseases
• Newborn Screening

Cause Classification: Medical

OROCRANIODIGITAL SYNDROME AWARENESS RIBBON COLOR:

Blue Jeans Awareness Ribbons for Orocraniodigital Syndrome - Listed by Global Genes®
Orocraniodigital Syndrome is a rare disease. Rare diseases are also represented by Zebra Ribbons.

Orocraniodigital Syndrome is also known as:
• Cleft Lip/Palate with Abnormal Thumbs and Microcephaly
• Cranio-Oro-Digital Syndrome
• Digital-Oro-Cranio Syndrome
• Juberg Hayward Syndrome

What is Orocraniodigital Syndrome?
Orocraniodigital Syndrome is an extremely rare inherited disorder characterized by multiple malformations of the head and face and the fingers and toes.

CATEGORIES

• Congenital and Genetic Diseases
• Ear, Nose, and Throat Diseases
• Mouth Diseases

Cause Classification: Medical

ORTHOSTATIC HYPOTENSION AWARENESS RIBBON COLOR:

Zebra Awareness Ribbons for Orthostatic Hypotension

Subdivisions of Orthostatic Hypotension (OH)
• Neurogenic Orthostatic Hypotension (NOH)

What is Orthostatic Hypotension (OH)?
Orthostatic Hypotension (OH) is a common condition characterized as a drop in blood pressure that occurs when a person stands up. OH can cause lightheadedness, dizziness or even fainting. Symptoms can also be subtle or absent. By definition, the drop in blood pressure must be greater than 20mm Hg of mercury in systolic BP and/or more than 10 mm of mercury in diastolic BP within 3 minutes upon standing from sitting or from a lying down face-up position. There are numerous, varied causes of OH. Neurogenic Orthostatic Hypotension (NOH) is a rare subtype caused by underlying neurologic disorders that affect a specific part of the autonomic nervous system.

CATEGORIES

• Heart Diseases

Cause Classification: Medical

OSLER'S DISEASE AWARENESS RIBBON COLOR:

Red and White Pinstripes Awareness Ribbons for Osler's Disease

OSTEOARTHRITIS AWARENESS RIBBON COLOR:

Blue Awareness Ribbons for Osteoarthritis

What is Osteoarthritis?
Osteoarthritis is the most common form of arthritis, affecting millions of people worldwide. It occurs when the protective cartilage on the ends of the bones wears down over time. Although osteoarthritis can damage any joint in the body, the disorder most commonly affects joints in the hands, knees, hips and spine.

CATEGORIES

• Musculoskeletal Diseases

Cause Classification: Medical

OSTEOGENESIS IMPERFECTA AWARENESS RIBBON COLOR:

Blue Awareness Ribbons for Osteogenesis Imperfecta

Osteogenesis Imperfecta (OI) is also known as:
• Brittle Bone Disease
• Ekman-Lobstein Disease
• Lobstein Disease (Type I)
• OI
• Vrolik Disease (Type II)

Subdivisions of Osteogenesis Imperfecta (OI)
• Osteogenesis Imperfecta Type I
• Osteogenesis Imperfecta Type II
• Osteogenesis Imperfecta Type III
• Osteogenesis Imperfecta Type IV

What is Osteogenesis Imperfecta (OI)?
Osteogenesis Imperfecta (OI) is a group of rare disorders affecting the connective tissue and characterized by extremely fragile bones that break or fracture easily, often without apparent cause.

CATEGORIES

• Congenital and Genetic Diseases

Cause Classification: Medical

OSTEOMYELITIS AWARENESS RIBBON COLOR:

Zebra Awareness Ribbons for Osteomyelitis

Osteomyelitis is also known as:
• Hematogenous Osteomyelitis

Subdivisions of Osteomyelitis
• Anaerobic Osteomyelitis
• Osteomyelitis Due to Vascular Insufficiency
• Osteomyelitis, Pyogenic, Acute
• Osteomyelitis, Pyogenic, Chronic
• Vertebral Osteomyelitis

What is Osteomyelitis?
Osteomyelitis is a bone infection, usually caused by bacteria, that can be either acute or chronic. This disorder usually occurs as a result of an infection in one part of the body that is transported through the bloodstream to a bone in a distant location. Among children and teens, the long bones of the legs and arms are most frequently affected. In adults, osteomyelitis most often affects the vertebrae of the spine and/or the hips.

CATEGORIES

• Bacterial Infections
• Musculoskeletal Diseases

Cause Classification: Medical

OSTEONECROSIS AWARENESS RIBBON COLOR:

Zebra Awareness Ribbons for Osteonecrosis

Osteonecrosis is also known as:
• Aseptic Necrosis
• Avascular Necrosis of Bone
• Ischemic Necrosis of Bone

What is Osteonecrosis?
Osteonecrosis, also known as Avascular Necrosis (AVN), Aseptic Necrosis or Ischemic Bone Necrosis, is a disease resulting in the death of bone cells. If the process involves the bones near a joint, it often leads to collapse of the joint surface and subsequent arthritis due to an irregular joint surface.

CATEGORIES

• Musculoskeletal Diseases

Cause Classification: Medical

OSTEOPETROSIS AWARENESS RIBBON COLOR:

Blue Jeans Awareness Ribbons for Osteopetrosis - Listed by Global Genes®
Osteopetrosis is a rare disease. Rare diseases are also represented by Zebra Ribbons.

Osteopetrosis is also known as:
• Albers-Schonberg Disease
• Marble Bone Disease
• Osteosclerosis Fragilis Generalisata

Subdivisions of Osteopetrosis
• Osteopetrosis, Autosomal Dominant; Adult Type (ADO)
• Osteopetrosis, Autosomal Recessive; Malignant Infantile Type (ARO)
• Osteopetrosis, Intermediate Autosomal (IAO)
• Osteopetrosis, X-Linked Recessive (XLO)

What is Osteopetrosis?
Osteopetrosis is marked by increased bone density due to a defect in bone reabsorption by cells called osteoclasts. This leads to accumulation of bone with defective architecture, making them brittle and susceptible to fracture. In some cases, this is also accompanied by skeletal abnormalities. Although symptoms may not initially be apparent in people with mild forms of this disorder, trivial injuries may cause bone fractures due to bone fragility.

CATEGORIES

• Congenital and Genetic Diseases

Cause Classification: Medical

OSTEOPOROSIS AWARENESS RIBBON COLOR:

White Awareness Ribbons for Osteoporosis

What is Osteoporosis?
Osteoporosis, or thinning bones, can result in painful fractures. Risk factors for osteoporosis include aging, being female, low body weight, low sex hormones or menopause, smoking, and some medications. Prevention and treatment include calcium and Vitamin D, exercise, and osteoporosis medications.

CATEGORIES

• Musculoskeletal Diseases

Cause Classification: Medical

OSTEOSARCOMA AWARENESS RIBBON COLOR:

Yellow Awareness Ribbons for Osteosarcoma

Osteosarcoma is also known as:
• Osteogenic Sarcoma

What is Osteosarcoma?
Osteosarcoma is a form of cancer. It is a type of tumor that affects the bones. Osteosarcoma can affect people at any age, but is most common during the teen-aged years, and is the most common bone cancer affecting children and adolescents under the age of 20. The long bones of the legs, usually near where they connect to the knees, and the upper long bone of the arms, near where this bone meets the shoulders, are the most common sites for osteosarcoma formation.

CATEGORIES

• Musculoskeletal Diseases
• Rare Cancers

Cause Classification: Medical

OSTEOSARCOMA AND MALIGNANT FIBROUS HISTIOCYTOMA OF BONE AWARENESS RIBBON COLOR:

Yellow Awareness Ribbons for Osteosarcoma and Malignant Fibrous Histiocytoma of Bone

What is Osteosarcoma and Malignant Fibrous Histiocytoma of Bone?
Osteosarcoma and Malignant Fibrous Histiocytoma (MFH) of the bone are forms of bone cancer. Osteosarcoma usually starts in osteoblasts, which are a type of bone cell that become new bone tissue. Osteosarcoma is most common in teenagers. It is the most common type of Bone Cancer and, according to the National Cancer Institute, some 450 children and young adults are diagnosed with this form of cancer each year in the United States.

CATEGORIES

• Musculoskeletal Diseases
• Rare Cancers

Cause Classification: Medical
Cross Reference: Cancer Causes And Their Associated Cancer Ribbon Colors

OTOPALATODIGITAL SYNDROME TYPE I AND II AWARENESS RIBBON COLOR:

Blue Jeans Awareness Ribbons for Otopalatodigital Syndrome Type I and II - Listed by Global Genes®
Otopalatodigital Syndrome Type I and II is a rare disease. Rare diseases are also represented by Zebra Ribbons.

Otopalatodigital Syndrome Type I and II is also known as:
• Cranioorodigital Syndrome
• Faciopalatoosseous Syndrome
• FPO
• OPD Syndrome
• Taybi Syndrome

Subdivisions of Otopalatodigital Syndrome Type I and II
• OPD Syndrome, Type I
• OPD Syndrome, Type II

What is Otopalatodigital Syndrome Type I and II?
Otopalatodigital Syndrome Type I and II are rare X-linked genetic disorders in which complete expression of the disease occurs only in males. Females may be affected with some of the symptoms. OPD Type I is the milder form of the disease and is characterized by cleft palate, hearing loss and skeletal abnormalities in the skull and limbs. OPD Type II includes these abnormalities as well as growth deficiency and, in a minority, abnormalities of the brain and is frequently not compatible with life.

CATEGORIES

• Congenital and Genetic Diseases
• Ear, Nose, and Throat Diseases
• Mouth Diseases
• Musculoskeletal Diseases
• Nervous System Diseases

Cause Classification: Medical

OVARIAN AND BREAST CANCER (COMBINED) AWARENESS RIBBON COLOR:

Pink and Teal Awareness Ribbons for Ovarian and Breast Cancer (Combined)

OVARIAN CANCER, ADULT AWARENESS RIBBON COLOR:

Teal Awareness Ribbons for Ovarian Cancer, Adult

What is Ovarian Cancer, Adult?
Ovarian Cancer is a type of cancer that begins in the ovaries. The female reproductive system contains two ovaries, one on each side of the uterus. The ovaries, each about the size of an almond, produce eggs as well as the hormones estrogen and progesterone. Ovarian Cancer often goes undetected until it has spread within the pelvis and abdomen.

CATEGORIES

• Rare Cancers

Cause Classification: Medical
Cross Reference: Cancer Causes And Their Associated Cancer Ribbon Colors

OVARIAN CANCER, CHILDHOOD AWARENESS RIBBON COLOR:

Teal Awareness Ribbons for Ovarian Cancer, Childhood
Alternate Color: Gold Awareness Ribbons for Ovarian Cancer, Childhood

What is Ovarian Cancer, Childhood?
Childhood Ovarian Cancer is a rare type of cancer that occurs due to abnormal and uncontrolled cell growth in the ovaries. The childhood form, specifically, is extremely rare and accounts for less than five percent of all ovarian cancer cases. The most common types of Ovarian Cancers diagnosed in children and adolescents include Germ Cell Tumors, followed by Epithelial Tumors, Stromal Tumors, and then Other Tumors (such as Burkitt Lymphoma and Small Cell Carcinoma of the Ovary). Many people with early Ovarian Cancer have no signs or symptoms of the condition. When present, symptoms may include painful menstrual periods; an abdominal lump; pain or swelling in the abdomen; having male sex traits; and/or early signs of puberty. The underlying cause of childhood ovarian cancer is often unknown. Certain inherited conditions, such as Ollier Disease, Maffucci Syndrome and Peutz-Jeghers Syndrome are associated with an increased risk of developing Childhood Ovarian Cancer.

CATEGORIES

• Rare Cancers

Cause Classification: Medical

OVARIAN EPITHELIAL CANCER AWARENESS RIBBON COLOR:

Teal Awareness Ribbons for Ovarian Epithelial Cancer

OVARIAN GERM CELL TUMOR AWARENESS RIBBON COLOR:

Teal Awareness Ribbons for Ovarian Germ Cell Tumor

OVARIAN LOW MALIGNANT POTENTIAL TUMOR AWARENESS RIBBON COLOR:

Teal Awareness Ribbons for Ovarian Low Malignant Potential Tumor

OVOTESTICULAR DISORDER OF SEX DEVELOPMENT AWARENESS RIBBON COLOR:

Blue Jeans Awareness Ribbons for Ovotesticular Disorder of Sex Development - Listed by Global Genes®
Ovotesticular Disorder of Sex Development is a rare disease. Rare diseases are also represented by Zebra Ribbons.

Ovotesticular Disorder of Sex Development (Ovotesticular DSD) is also known as:
• Ovotesticular DSD
• True Gonadal Intersex
• True Hermaphroditism

What is Ovotesticular Disorder of Sex Development (Ovotesticular DSD)?
Ovotesticular Disorder of Sex Development (Ovotesticular DSD) is a very rare disorder in which an infant is born with the internal reproductive organs of both sexes. The gonads can be any combination of ovary, testes or combined ovary and testes. The external genitalia are usually ambiguous but can range from normal male to normal female.

CATEGORIES

• Congenital and Genetic Diseases
• Endocrine Diseases
• Female Reproductive Diseases
• Male Reproductive Diseases

Cause Classification: Medical