<s>[INST] hi, 5 days ago my son ran fast and hard right into a concrete wall! it was horrible! he was looking down at his feet. he immediately got a big bump and bruise on his forehead and there were no other symptoms at all. he was back to himself within the hour and i iced it for the first 2 days. my question is. .. should i still be keeping a close eye on him after 1 week or would he have other symptoms before that., if there was damage such as brain injury, fracture, or internal bleeding. thank you. ps- he is suppose to go away with his dad next week but i am worried about him leaving b/c i have heard there could be problems even after 72 hrs. ps- my son is 5 yrs old and the bump has gone down, the bruise is now yellow. it is rt on his forehead. he was running fast! and the wall he slammed into is hard!! concrete!!!! [/INST] There may be several outcomes for this condition1. There may be only superficial injury which is in healing phase as you are mentioning.2. But as you're saying that the child was in speed, so there are chances of internal damage also.  It is not always necessary that these produce symptom in early days but may cause consequences even after several months in form of post-traumatic epilepsy etc. So, this time u should go for ct scan of head for any trauma to brain and its vessels. If this is normal then everything is right. </s>