Conversation: The conversation between human and AI assistant.
[|Human|] Over a week ago, I wrecked a dirt bike and when I hit the concrete it took out mostly everything right under my kneecap. No muscles or ligaments hurt. But the doctor pulled together both the sides and stitched it up. Now all around the wound, my skin turns purple at random times. What can be causing this?
[|AI|]  The skin around the knee remains very loose. So it becomes easy to collect blood under the skin usually after such injury. This is called bruise. It changes color as time passes from red to blue, purple , green and finally becomes normal after 15-20 days. it's a normal phenomenon. You should not be worried. Icing, rest and if swelling is there anti-inflammatory such as ibuprofen will help you. Hope this answers your question. If you have additional questions or follow-up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you good health.