Hi and thanks for the query, Its possible that it could be an allergy to an anesthesic, but the duration of the itches deserves exploration of other possibilities of the itches. A blood test in search of raised eosinophil levels to confirm an allergic component. At some point, raise Immunoglobulin E levels might be measured. A thick and thin blood films in search of parasites like microfilaria should be actively searched for. A past history of recent travel to an area endemic for parasitic worms shall be of utmost importance. I suggest a good clinical evaluation by your internist and appropriate blood tests be done. Medical conditions like liver disease at times could lead to itches, Thanks and best regards, Luchuo, MD.