A therapeutic method in which plural points on the body are stimulated by light of different wavelengths emitted from wands, probes or other applicators under the control of a central microprocessor. The microprocessor executes program instructions to produce light at each applicator whose intensity, frequency, duration and pulsation accord with protocols which are automatically selected depending on the portion of the body being treated. The protocols can be manually overridden by the therapist, in which case the changed parameters are stored in memory. The apparatus is particularly useful in performing traditional therapeutic methods to treat internal disorders, substance abuse, pediatric and podiatric problems and disorders of the ear, nose throat, as well as musculoskeletal, neurological or dermatological disorders.