Video from Vladimir Putin’s closely watched meeting with North Korean leader Kim Jong Un in Russia on Wednesday showed the Russian president continuously twisting his foot, sparking a new round of ...

You're relaxing on the sofa when suddenly your eyelid starts twitching. Or perhaps it's a muscle in your arm, your leg, or your foot that begins to spasm—sometimes for a few seconds, sometimes for ...

The clinical distinction between myopathic and neurogenic disorders of the motor unit is often difficult, since both lesions appear as flaccid, areflexic paralyses, often with variable muscular ...