Hello,
The blood under the skin which causes the discoloration of bruising should be totally reabsorbed by the body in three weeks or less. If the symptoms are persisting for more than 4 months, it may be due to formation of hematoma
Hello,
Hematoma which is old needs to be drained by surgical methods from a good surgeon. This includes giving and incision and draining the blood or leaving a drain and prescribing antibiotics.