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Frequency. 1 in 12,000 to 20,000 people [6] Angelman syndrome (AS) is a genetic disorder that mainly affects the nervous system. [6] Symptoms include a small head and a specific facial appearance, severe intellectual disability, developmental disability, limited to no functional speech, balance and movement problems, seizures, and sleep ...
A rare disease is any disease that affects a small percentage of the population. In some parts of the world, the term orphan disease describes a rare disease whose rarity results in little or no funding or research for treatments, without financial incentives from governments or other agencies. Orphan drugs are medications targeting orphan ...
Poliosis circumscripta, commonly referred to as a "white forelock," is a condition characterized by localized patches of white hair due to a reduction or absence of melanin in hair follicles. Although traditionally associated with the scalp, poliosis can affect any hairy area on the body, including eyebrows, eyelashes, and beards.
Cornelia de Lange syndrome. Cornelia de Lange syndrome (CdLS) is a genetic disorder. People with Cornelia de Lange syndrome experience a range of physical, cognitive, and medical challenges ranging from mild to severe. Cornelia de Lange syndrome has a widely varied phenotype, meaning people with the syndrome have varied features and challenges.
Usher syndrome, also known as Hallgren syndrome, Usher–Hallgren syndrome, retinitis pigmentosa–dysacusis syndrome or dystrophia retinae dysacusis syndrome, [ 1 ] is a rare genetic disorder caused by a mutation in any one of at least 11 genes resulting in a combination of hearing loss and visual impairment.
And that meant the family lost their health insurance. Related: Mom Seeks Cure for 3-Year-Old Daughter's Rare Genetic Disorder: ‘I Want to Work as Hard as She Does’ (Exclusive)
Fibrodysplasia ossificans progressiva (/ ˌ f aɪ b r oʊ d ɪ ˈ s p l eɪ ʒ (i) ə ɒ ˈ s ɪ f ɪ k æ n z p r ə ˈ ɡ r ɛ s ɪ v ə /; [1] abbr. FOP), also called Münchmeyer disease or formerly myositis ossificans progressiva, is an extremely rare connective tissue disease in which fibrous connective tissue such as muscle, tendons, and ligaments turn into bone tissue (ossification).
Duchenne muscular dystrophy. P – Point mutation, or any insertion/deletion entirely inside one gene. D – Deletion of a gene or genes. Dup - Duplication of a gene or genes. C – Whole chromosome extra, missing, or both (see chromosome abnormality) T – Trinucleotide repeat disorders: gene is extended in length.