ok so a friends of mine got dehydrated and fainted, hit her head REALLY hard and got a bad concussion. but she said that she also lost her memory, like she forgot people. we dont think its THAT severe but she hit it pretty hard. anyways last time i checked u dont forget ppl from a concussion...and she doesnt have amnesia. we think shes lying. its not like we r gonna say anything to her shes struggling enough, but r there any people out there who know if u concussions cause memory loss of forgetting ppl, not just the event of where the inciident happened, but forgetting a lot of stuff. also if this helps, her memory is coming back when looking at pics of people.