Involuntary contractions, or twitching of groups of muscle fibers, a courser form of muscle contractions than fibrillation.
Visible involuntary contraction or twitching of muscle fibers which are innervated by a single motor unit. Most arise from the distal axon. When accompanied by wasting and weakness, they can signify lower motor neuron disease. They may be commonly found in normal subjects.
Muscle twitching seen with peripheral motor nerve injury.
Frequent small, localized muscle contractions.
Non-painful, rapid and involuntary contractions or twitchings of groups of muscle fibers.
Involuntary contractions or twitching of muscle fibers, visible under the skin.