Periodic Limb Movement Disorder
Overview of Periodic Limb Movement DisorderMany people may experience limb movements during sleep but it is only classed as a disorder when sleep of the sufferer, or bed partner, is affected. The movement may range from slight movement of the hands or feet through to all the limbs moving wildly. The movement typically lasts half a second to 5 seconds, with a repetition of the movement anywhere from 5 to 90 seconds later. Symptoms of Periodic Limb Movement DisorderThe frequent and uncontrolled limb movements can cause frequent awakenings and reduce the quality of sleep. Consequently sufferers complain of [link /sleep disorders/insomnia] insomnia and daytime sleepiness. Research suggests that more than 10% of people who go to their doctor complaining of insomnia have PLMD. Causes of Periodic Limb Movement DisordersPLMD is related to restless legs syndrome, with the majority of RLS sufferers also experiencing limb movement. Factors that increase the likelihood of PLMD in the absence of restless leg syndrome include being a shift worker, snoring, coffee drinking, stress, and use of hypnotics. There are other factors that are linked to both restless leg and PLMD, such as musculoskeletal complaints, heart disease, and sleep apnea. There is evidence that PLMD can be caused by mineral deficiencies such as calcium or iron. Treatment for Periodic Limb Movement DisorderTreatment can involve testing for any deficiencies in minerals and then rectifying these. Treatment also revolves around eliminating confounding factors such as caffeine, alcohol, stress, and any other sleep disorders. Finally there are a number of medications that can help reduce the limb movements and awakenings. If you, or your partner, believe you have PLMD please talk to your doctor or sleep specialist |
