Complex regional pain syndrome Type II (causalgia) in head neck region: A case report

Complex regional pain syndrome (CRPS) with localized erythema and hyperthermia of skin can be a perplexing clinical situation and has created varied diagnostic dilemmas for clinicians. Various cases of CRPS in the extremities have been documented, but in the head neck region, it is quite uncommon and only 13 cases have been reported since 1947 and here lies the importance of reporting the case. A 30-year-old female reported to the OPD with complain of severe pain, occasional swelling, change in overlying skin temperature, and color in left lower one-third region of face near mandibular angle since 2½ years. She had a trauma to that region 3 years back. The history and clinical examination revealed that the patient met “Budapest Clinical Criteria” for diagnosis of CRPS Type II and was treated with amitriptyline, pregabalin, methylcobalamine, steroids, and other supportive treatments. The patient showed marked improvement in pain control. Therefore, history and clinical examination and early diagnosis are crucial for the better treatment outcome in CRPS Type II