My husband takes cumudum. On Sunday, a week ago, his right arm started to bruise between the elbow and armpit, also there was a knot under the bruise and he was in severe pain. ER docs called it a hematoma, go home with some pain medicine and put heat on the arm where the knot was. Bruise spread down to the lower arm whch is now brused and swollen, but no knots. Cannot use right arm and three middle finges tingle. Now 5 days of continued trearment nothing has changed with the arm. However a very large bruise has spread down his side spreading towards his sternum.