Tingling Legs Before Sleep? Restless Legs Syndrome: Why It Troubles You Every Night

Modern medicine defines this nighttime leg discomfort as restless legs syndrome and understands it in depth from a neurological perspective. This condition is characterized by an unpleasant and uncontrollable urge to move the legs while sitting quietly or lying down, which is temporarily relieved by movement. The symptoms tend to worsen particularly in the evening or at night, severely interfering with sound sleep and lowering quality of life.

One of the primary causes of restless legs syndrome is known to be dopamine system dysfunction in the brain. Dopamine is a neurotransmitter that regulates movement and facilitates the sensation of reward in the brain; a deficiency or imbalance of this dopamine is pointed out as the main cause of restless legs syndrome. Because iron is also an essential element for dopamine synthesis, low iron levels in the body can impair dopamine production and worsen symptoms. Therefore, even in the absence of anemia, an iron deficiency in the brain may be associated with restless legs syndrome.

In addition, various factors such as genetic traits, pregnancy, kidney disease, Parkinson's disease, and neuropathy can trigger or worsen restless legs syndrome. Certain medications, such as antidepressants or antihistamines, can also trigger symptoms, requiring caution. It is also commonly accompanied by periodic limb movements in sleep, a phenomenon where the legs move periodically without one's awareness during sleep, serving as another cause that disrupts deep sleep. Restless legs syndrome is not simply a symptom of fatigue; it indicates a state where the delicate balance of the cranial nerve system is disrupted, and it requires an accurate diagnosis and appropriate management.