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Fasciculation

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Definition: Involuntary contraction of the muscle fibers innervated by a motor unit. Fasciculations can often by visualized and take the form of a muscle twitch or dimpling under the skin, but usually do not generate sufficient force to move a limb. They may represent a benign condition or occur as a manifestation of MOTOR NEURON DISEASE or PERIPHERAL NERVOUS SYSTEM DISEASES. (Adams et al., Principles of Neurology, 6th ed, p1294)  note category: do not confuse with axonal fasciculation (index under AXONS /physiol)    Other names Tongue Fasciculations; Tongue Fasciculation; Skeletal Muscle Fasciculations; Skeletal Muscle Fasciculation; Neural Fasciculations; Neural Fasciculation; Muscular Fasciculations; Muscular Fasciculation; Muscle Fasciculations, Skeletal; Muscle Fasciculation, Skeletal; Fasciculations, Tongue; Fasciculations, Skeletal Muscle; Fasciculations, Neural; Fasciculations, Muscular; Fasciculations, Benign; Fasciculations; Benign Fasciculations; Benign Fasciculation; Fasciculation, Tongue; Fasciculation, Skeletal Muscle

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Sources: NLM Medical Subject Headings, NIH UMLS, Drugs@FDA, FDA AERS original data copyright United States Government. No endorsement implied. Last modified 6/6/2012

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