The cases of RLS that run in families often have more severe symptoms and are frequently more difficult to treat. These include poor blood circulation in the legs, nerve problems, muscle disorders, kidney disease, alcoholism and vitamin or mineral deficiencies. Other factors that can trigger RLS are abuse of medications, caffeine consumption , smoking, fatigue, a very warm environment and prolonged exposure to cold temperatures. The cause of PLMD is also unclear. Periodic limb movements are more common in people who have kidney disease or narcolepsy.
Some antidepressant medications can also increase the frequency of limb movements.
Your healthcare provider should be consulted to make a proper diagnosis. RLS symptoms are so unique that diagnosis of this disorder can often be made on the basis of patients' descriptions of their individual symptoms. Terms used frequently to describe these symptoms include creepy, crawly, pulling, gnawing and the irresistible feeling to jerk or move the legs. PLMD People with PLMD are usually unaware of their nighttime movements and may instead only complain of restless sleep and or excessive daytime sleepiness. In this case, an overnight sleep study may be needed to diagnose the cause of the problem.