Dec 17, 2024 · Learn the causes, symptoms, and treatments for this group of rare diseases that make muscles weak or unable to move.

Periodic paralysis (PP) is a rare genetic disorder. It causes sudden attacks of short-term muscle weakness, stiffness, or paralysis. These attacks may affect the whole body or just one or two limbs.

Attacks of weakness usually last 15 minutes to an hour but can last for a day or more. In severe cases, these attacks may recur frequently. They commonly occur after vigorous exercise followed by rest, …

Sep 22, 2025 · Hypokalemic periodic paralysis (hypoPP) causes sudden episodes (attacks) of extreme muscle weakness or paralysis. These attacks can last for hours or even days. This rare genetic …

Signs and symptoms of this syndrome involve episodic muscle weakness. Each type of periodic paralysis syndrome has characteristic symptoms and causes, for example, irregular heartbeats, …

Periodic paralysis is a group of rare genetic diseases that lead to weakness or paralysis [1] from common triggers such as cold, heat, high carbohydrate meals, not eating, stress or excitement and …

Periodic paralysis (PP) is a rare genetic disorder. It causes sudden attacks of short-term muscle weakness, stiffness, or paralysis. These attacks may affect the whole body or just one or two limbs. …

What is periodic paralysis? Learn more about the different types of periodic paralysis and symptoms that come along with it.

Jan 8, 2026 · Symptoms often start earlier in childhood, and episodes are generally shorter, typically lasting from minutes to an hour. Some individuals with HyperPP also experience myotonia, which is …

Symptoms of HyperPP usually start during childhood or adolescence. Episodes of muscle weakness or paralysis can happen when potassium levels in the blood are high. This could be triggered by cold …