<human>: I had a .5 golf ball size hematoma on the top, close to knuckles on right hand on 2/9.  The week after the trauma it would turn bright red in the evening.(  While making dinner)  Now , 9 days later I have a painful filled sack between the knuckles ( size of Quarter) .  Do I need to follow up with doc?
<bot>: Brief Answer:You should see a surgeon. Detailed Answer:Hello, Thank you for using Chat Doctor. Generally the subcutaneous hematomas after trauma does reabsorb by them selves within three weeks or fewer. The color changes from that of a purplish-blue bruise to yellow and brown as the blood chemicals gradually are metabolized and the hematoma resolves. In case of persistence and organization within a sack, as in your case, then should be done an biography and then should be evaluated by a surgeon. The surgeon will evaluate the possibility to Chat Doctor.  As it hurts, may be the hematoma is infected because it is a favorable place for bacteria to grow. You should take some oral anti-inflammatory 