Chronic orofacial pain. A practical approach to differential diagnosis

Successful diagnosis of chronic orofacial pain is a difficult task. This article attempted to simplify diagnosis by first classifying the orofacial pain on the basis of clinical characteristics into three basic pain categories: somatic, neurogenous, and psychogenic, and then according to the tissue system affected. An accurate and thorough history is essential, along with a detailed physical examination. In addition, an awareness of the local, systemic, and psychological causes of orofacial pain is necessary. The adage "what you don't know, you don't diagnose" is especially apt in regard to orofacial pain.