Conversation: The conversation between human and AI assistant.
[|Human|] Hello, my friend was wind surfing and fell off. The board slammed into his right front shin. It swelled up immediately to about four inches in diameter. He received several stitches, but his foot is black & blue and after sitting for a while, his leg feels numb when he gets up to walk. Is this normal?
[|AI|]  Hi. Well bruising is a common finding after an injury due to spillage of blood from blood vessels into the soft tissues. Lump can be due to Hematoma formation. Numb feeling occurs due to trauma to superficial nerve endings and inflammation. It can take a few days for the condition to improve. For now, he can elevate the leg while lying down. Do cool compresses over the injured area. Take anti-inflammatory painkillers like Advil if there is pain. Do not exert Mich and can apply Thrombophob gel to reduce the bruising. Hope I have answered your query. Please let me know if I can assist you further. Regards.