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Cerebellar ataxia with neuropathy and vestibular areflexia syndrome (CANVAS) is an autosomal recessive late-onset heredodegenerative multisystem neurological disease. The symptoms include poor balance and difficulty walking. Chronic cough and difficulty swallowing may also be present.
Rasmussen syndrome or Rasmussen's encephalitis is a rare inflammatory neurological disease, characterized by frequent and severe seizures, loss of motor skills and speech, hemiparesis (weakness on one side of the body), encephalitis (inflammation of the brain), and dementia.
Möbius syndrome or Moebius syndrome is a rare congenital neurological disorder which is characterized by facial paralysis and the inability to move the eyes from side to side. Most people with Möbius syndrome are born with complete facial paralysis and cannot close their eyes or form facial expressions. Limb and chest wall abnormalities ...
Fields condition, [1] also known as Fields' disease, [2] [3] is a neuromuscular disease that is considered the rarest medical condition in the world. It was named after Welsh identical twins Catherine and Kirstie Fields, who are two of only three people known to have been affected. [4] [5] [6]
Alexander disease is a very rare autosomal dominant leukodystrophy, which are neurological conditions caused by anomalies in the myelin which protects nerve fibers in the brain. The most common type is the infantile form that usually begins during the first two years of life.
Opsoclonus myoclonus syndrome (OMS), also known as opsoclonus-myoclonus-ataxia (OMA), is a rare neurological disorder of unknown cause which appears to be the result of an autoimmune process involving the nervous system. It is an extremely rare condition, affecting as few as 1 in 10,000,000 people per year.
Alternating hemiplegia of childhood (AHC) is an ultra-rare neurological disorder named for the transient episodes, often referred to as "attacks", of hemiplegia (weakness or paralysis) that those with the condition experience. It typically presents before the age of 18 months.
Common symptoms in infants include lack of motor skills, weak muscle tone, and macrocephaly. [4] It may also be accompanied by difficulties in feeding and swallowing, seizures and sleep disturbances. [4] Affected children typically die before the age of 10, but life expectancy can vary. [5]