Hyperkalemic periodic paralysis is a rare genetic disorder that affects muscle function. It is characterized by episodes of muscle weakness or paralysis, which can last from minutes to hours. These episodes are often triggered by factors such as exercise, stress, or high levels of potassium in the blood. The condition is caused by mutations in genes that regulate sodium channels in muscle cells. During an episode, elevated potassium levels disrupt the normal electrical activity of muscles, leading to weakness. Management typically involves avoiding triggers and, in some cases, medications to help stabilize potassium levels.