Fasciculations refer to involuntary, brief, and spontaneous muscle contractions or twitches that involve small groups of muscle fibers. These twitches are visible under the skin and can happen in any muscle of the body, but they often occur in the arms, legs. Unlike myokymia, which typically involves finer muscle fibers like those around the eyes. Local Twitch Response (LTR) refers to an involuntary, reflexive contraction of a muscle or a portion of a muscle that occurs when a trigger point is s

Tongue fasciculation refers to fine, involuntary twitching movements of the tongue muscles, often described as a rippling or worm-like motion. It typically indicates lower motor neuron dysfunction, particularly involving the hypoglossal nerve (cranial nerve XII). In children, examination involves observing the tongue at rest and during minimal activity, ideally when the child is calm or feeding. A tongue depressor and good lighting may help visualize the movements. Common pediatric causes includ