Muscle Cramp

**Definition:** A sustained and usually painful contraction of muscle fibers. This may occur as an isolated phenomenon or as a manifestation of an underlying disease process (e.g., UREMIA; HYPOTHYROIDISM; MOTOR NEURON DISEASE; etc.). (From Adams et al., Principles of Neurology, 6th ed, p1398)

**Tree numbers:** - C05.651.475 - C10.597.613.500 - C23.888.592.608.500

**Synonyms:** - Cramp - Muscular Cramp