4.13 : むずむず脚症候群

Restless leg syndrome is a neurological condition causing an uncontrollable urge to move the legs due to sensations such as itching, throbbing, crawling, or aching.

Some of these sensations resemble the irritation of a bug crawling under or on the skin, prompting an immediate urge to shake it off.

Symptoms usually appear during inactivity and worsen during periods of rest, like attempting to sleep or sitting through a movie. This disruption of rest compels movement for relief.

Restless leg syndrome may stem from dopamine imbalances, which affect the brain's ability to regulate muscle movements and nerve signals.

The syndrome often co-occurs with conditions like chronic kidney disease, iron deficiency, peripheral neuropathy, and diabetes, suggesting a link between metabolic health and the syndrome.

Treatments for restless leg syndrome include anticonvulsants, which manage symptoms similar to epilepsy drugs; benzodiazepines, which improve sleep but can have dependency risks; and opioids, which relieve sensations but also carry dependency risks.

Non-drug treatments like leg massages or warm baths alleviate symptoms. Regular exercise and avoiding caffeine can also improve symptom management.