my 86 year old sister fell and fracture her wrist. the orthopedic doctor put her in a cast. few days later she started to complain of pain? burning? in her fingers and she could not stand the cast. the doctor removed the cast and gave her a removable cast. her arm started burning?. I though may be it is allergy. I put a sleeve under the cast. it helped . Now she still feel tingling in her fingers. what can Hdone