(A) Report of pain or ache in the jaw, temples, face, periauricular area, or inside the ear at rest or during function
(B) Pain reported by the subject in response to palpation of 3 or more of the following muscle sites (right side and left side count as separated sites for each muscle):
Posterior temporalis
Middle temporalis
Anterior temporalis
Origin of masseter
Body of masseter
Insertion of masseter
Posterior mandibular region
Submandibular region
Lateral pterygoid area
Tendon of temporalis
(3.b) Myofascial pain with limited opening
(A) Myofascial pain as defined in (3.a)
(B) Pain-free unassisted mandibular opening of less than 40 mm
(C) Maximum assisted opening (passive stretch) of 5 or more mm greater than pain free unassisted opening
