Pain in the TMJ area usually has a local cause and is seldom referred to any distance. Pain of the TMJ structures may arise from the masticatory muscles or from the joint itself. The main inert structures that can give rise to pain are the intracapsular tissues located posterior to the condyle: the posterior part of the meniscus, the meniscus attachments to the capsule, the capsule and the retromeniscal fat pad.1 Pain is often accompanied by headache, earache or pain in the postauricular area. Pain arising from the TMJ sometimes refers to the maxilla. This may be encountered in patients of 45–60 years of age. It affects females more often than males and the right side more frequently than the left. The patients complain of unilateral shooting pain, from the ear towards the temporal area and the maxilla, sometimes even in the forehead and towards the pharynx. The cause of the pain may be so obscure that unnecessary dental extraction takes place. Pain is seldom accompanied by diminished sensitivity but characteristic trigger points are often found. Stimulation of these, even sometimes by light touch, results in pain felt elsewhere, which is followed by a refractory period of up to 30 seconds during which stimulation does not lead to new pain. The pain attacks seldom last longer than a few seconds. They may recur at irregular intervals, sometimes on a daily, weekly or even a monthly basis. They are isolated or come on in clusters.2 This can give rise to dysaesthesia preceding the characteristic vesicles. No true trigger points are present. About 15% of all peripheral facial palsies is caused by this virus.3 This is a disorder of the facial nerve, probably the result of a cranial neuritis.4,5 This predominantly affects males, is unilaterally localized, and is associated with increased lachrymation, rhinitis and ipsilateral facial redness. Attacks of severe headache in or around the eyes, usually unilaterally, come on within 5–10 minutes and last from about 45 minutes to a few hours. Attacks occur in clusters.6 This is one of the manifestations of a giant-cell arteritis, an autoimmune process.7 It is usually seen unilaterally in males over 50 years of age and is frequently associated with polymyalgia rheumatica. It is characterized by a knocking pain around the temporal vessels. The skin overlying the artery is red, swollen and warm. The erythrocyte sedimentation rate is raised.
Clinical examination of the temporomandibular joint
Pain
Pain referred from the temporomandibular joint
Pain referred to the temporomandibular joint area
Neurological disorders
Trigeminal nerve neuritis
Herpes zoster oticus infection
Idiopathic peripheral facial palsy (Bell’s palsy)
Non-neurological disorders
Cluster headache (Horton’s neuralgia)
Temporal arteritis