Acetazolamide-responsive myotonia is a form of potassium-aggravated myotonia (PAM) which shows dramatic improvement with the use of acetazolamide (ACZ). The disease is MONDO_0020483 (acetazolamide-responsive myotonia). Also known as: ACZ-responsive congenital myotonia, ACZ-responsive myotonia, Acetazolamide-responsive congenital myotonia, myotonia-painful contractions syndrome, painful congenital myotonia, painful myotonia.