A<unk> , or muscle twitch, is a spontaneous, involuntary muscle contraction and relaxation, involving fine muscle fibers. They are common, with as many as 70% of people experiencing them. They can be benign, or associated with more serious conditions. When no cause or pathology is identified, they are diagnosed as benign<unk>  syndrome.
Fasciculation
Fascia
Dystrophy
Synesthesia
Spasticity
Monoplegia
Pallesthesia
Dysesthesia