Abstract
Complex regional pain syndrome which is a rare syndrome following an injury or trauma, is an extremely painful condition. Diagnosis of this condition is not easy. They present with various symptoms like allodynia, hyperalgesia, asymmetry of temperature and sweating ,restricted range of motion. Identifying and treating this condition at earlier stage is important. There are different treatment options like pharmacological (NSAIDs, Anticonvulsants, Antidepressants, neuromodulators) and interventional techniques like Stellate ganglion block, Thoracic Sympathetic Ganglion block, Lumbar sympathetic block, Neurostimulation.
 In this case report we present a case of 52 year old female post mastectomy and radiation therapy developing CRPS of left upper limb, which was diagnosed and managed successfully with diagnostic thoracic sympathetic ganglion block followed by therapeutic radiofrequency ablation.
Highlights
Complex regional pain syndrome (CRPS) is a extremely heterogeneous, rare disease, presenting with moderate to severe pain
She came with complaints of severe pain in left upper limb to surgery OPD after 18 months of surgery, were they managed the patient with NSAIDs, but she did not have any significant pain relief
Diagnosing CRPS is very difficult since there is no gold standard investigation.Diagnosis is purely based on history and physical examination.International association for study of pain gave a clinical diagnostic criteria which was based on signs and symptoms of the patient. Budepest Criteria is widely used to diagnose CRPS(Table1)
Summary
Complex regional pain syndrome (CRPS) is a extremely heterogeneous, rare disease, presenting with moderate to severe pain. CRPS is a painful posttraumatic disorder, which is one of the classic example of neuropathic pain. It is still not completely understood and extremely difficult to treat [1]. International Association for Study of Pain defined CRPS as a “Collection of locally appearing painful conditions following a trauma, which occur distally and exceed in intensity and duration of the expected clinical course of original trauma, often resulting in considerably restricted motor function” [1,2,3]
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