U.S. flag

An official website of the United States government


Send to:

Choose Destination

Search results

Items: 2



Chorea-acanthocytosis (ChAc) is characterized by a progressive movement disorder, cognitive and behavior changes, a myopathy that can be subclinical, and chronic hyperCKemia in serum. Although the disorder is named for acanthocytosis of the red blood cells, this feature is variable. The movement disorder is mostly limb chorea, but some individuals present with parkinsonism. Dystonia is common and affects the oral region and especially the tongue, causing dysarthria and serious dysphagia with resultant weight loss. Habitual tongue and lip biting are characteristic, as well as tongue protrusion dystonia. Progressive cognitive and behavioral changes resemble those in a frontal lobe syndrome. Seizures are observed in almost half of affected individuals and can be the initial manifestation. Myopathy results in progressive distal muscle wasting and weakness. Mean age of onset in ChAc is about 30 years, although ChAc can develop as early as the first decade or as late as the seventh decade. It runs a chronic progressive course and may lead to major disability within a few years. Life expectancy is reduced, with age of death ranging from 28 to 61 years. [from GeneReviews]

MedGen UID:
Concept ID:
Disease or Syndrome

Self-mutilation of tongue and lips due to involuntary movements

Uncontrolled movements result in tissue damage to the tongue and lips. [from HPO]

MedGen UID:
Concept ID:

Supplemental Content

Find related data

Search details

See more...

Recent activity

Your browsing activity is empty.

Activity recording is turned off.

Turn recording back on

See more...