[2] It is a rare hereditary disease that affects various muscular and nervous systems in the body, passing to roughly fifty percent of the offspring.

The condition manifests itself as attacks lasting from a few minutes to several hours.

Symptoms experienced during attacks can vary and include dystonia, chorea, athetosis, ballismus, or a combination.

Patients may also benefit from other benzodiazepines, phenobarbital, and other anticonvulsants such as valproic acid.

[7] Affected individuals have reported garlic to be effective for softening the attacks, but no studies have been done on this.