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Glossary Term

Trigger Point

Trigger points are hyper-irritable spots in skeletal muscle that can cause referred pain, tenderness, motor dysfunction, and autonomic phenomena. These spots are associated with a palpable nodule in a taut band and are painful on compression.

Trigger Point: A hyper-irritable spot in skeletal muscle that is associated with a hypersensitive palpable nodule in a taut band. The spot is painful on compression and can give rise to characteristic referred pain, referred tenderness, motor dysfunction, and autonomic phenomena (1).

  1. David G. Simons, Janet Travell, Lois S. Simons, Travell & Simmons’ Myofascial Pain and Dysfunction, The Trigger Point Manual, Volume 1. Upper Half of Body: Second Edition,© 1999 Williams and Wilkens

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Synonyms

  1. Nodule
  2. Muscle knot
  3. Acute point of hypercontractility

Related Courses

Muscle Fiber Dysfunction and Trigger PointsTrigger Point Assessment (and Palpation)Static Manual Release: Upper Trapezius, Levator Scapulae, Rhomboids and Pectoralis Minor (for Upper-Body Dysfunction)