<s>[INST] Hey docs, my mom had a small cut on the back of her hand a few days ago, and it s turned into a large discolored bump. It s dark purple and the bump isn t as swollen as yesterday, but the color has started to spread to her fingers and wrist. Any help is appreciated. [/INST] Hi, I have gone through your question and understand your concern. You didn't mentioned how many days has been passed. As you said its dark purple it means that blood has been accumulated inside and as darkening spreading to fingers it means that it is pressing arteries and obstructing blood supply to finger and wrist.you must consult a surgeon for proper surgical incision and drainage under antibiotic cover. </s>