What is periodic leg movement disorder (PLMD)?
This disorder usually occurs while a person sleeps. The unaware sleeper has a repetitive series of leg jerks in combination with the extension of the big toe and partial bending of the ankle, knee and sometimes hip. PLMD can result in fragmented, restless sleep and complaints of insomnia or excessive daytime sleepiness. In addition, for serious sufferers the disorder can produce anxiety and depression.
