Geniospasm

Common Name(s)

Geniospasm

Hereditary geniospasm is a movement disorder that causes episodes of involuntary tremor of the chin and lower lip. The episodes may last anywhere from a few seconds to hours and may be brought on by stress or may occur without an apparent trigger. The episodes usually first appear in infancy or in early life and tend to lessen in frequency with age. Hereditary geniospasm is believed to be inherited in an autosomal dominant pattern. Although the exact gene(s) causing hereditary geniospasm have not been identified, a study of one family suggested that mutations in a gene on chromosome 9, located specifically at 9q13-q21, might cause the condition in some families. Results from other family studies suggest that there may be other genes that might be associated with hereditary geniospasm.
 

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Advocacy and Support Organizations

 

Condition Specific Organizations

Following organizations serve the condition "Geniospasm" for support, advocacy or research.

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General Support Organizations

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Scientific Literature

Articles from the PubMed Database

Research articles describe the outcome of a single study. They are the published results of original research.
The terms "Geniospasm" returned 1 free, full-text research articles on human participants. First 3 results:

Hereditary geniospasm: linkage to chromosome 9q13-q21 and evidence for genetic heterogeneity.
 

Author(s): P R Jarman, N W Wood, M T Davis, P V Davis, K P Bhatia, C D Marsden, M B Davis

Journal: Am. J. Hum. Genet.. 1997 Oct;61(4):928-33.

 

Hereditary geniospasm is an unusual movement disorder causing episodes of involuntary tremor of the chin and the lower lip. Episodes typically start in early childhood and may be precipitated by stress, concentration, and emotion. Hereditary geniospasm is inherited as an autosomal ...

Last Updated: 7 Nov 1997

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