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Hypokalemic Periodic Paralysis

Description

Hypokalemic periodic paralysis is characterized by episodes of extreme muscle weakness or paralysis. Attacks usually occur after sleep or rest. This disorder is distinguished from other forms of paralysis because sufferers demonstrate normal thyroid function and very low blood levels of potassium during attacks.

Diagnosis

Patients complain of episodes of muscular weakness or paralysis in the arms and legs usually right after waking up. These episodes can be caused by eating meals high in salt or carbohydrates or drinking alcohol.

Treatment

Potassium can stop an attack, and patients are typically asked to avoid salt, carbohydrates and alcohol. Doctors may prescribe Acetazolamide to prevent attacks.

Source: Adapted from International Classification of Sleep Disorders Diagnostic & Coding Manual, American Academy of Sleep Medicine.