Externally Peer Reviewed by Mosby Overview and Definition Prevalence.
Cramps typically occur at night, are sporadic and random, and usually last only seconds to minutes.
Muscle fatigue and passive plantar flexion. Amyotrophic lateral sclerosis, polyneuropathies, peripheral nerve injury. Hypocalcemia, respiratory alkalosis, hypermagnesemia, hypokalemia, hyperkalemia. Unrevealing unless a cramp is observed. Treatment Acute muscle cramp.