What is anesthesia dolorosa?
Anesthesia dolorosa is a syndrome in which pain is felt in an area that is otherwise numb or desensitized. It commonly occurs after partial nerve lesions and may be a complication of radiofrequency coagulation of the trigeminal nerve.
In a certain percentage of patients, the original trigeminal neuralgia pain is replaced by spontaneous pain in a now denervated area. The paradox is that an otherwise insensitive area is painful.