sometimes when something hits my head, like a ball or stand up from off the ground and hitting my head against a desk or table, it doesn t have to be all that hard of a hit but it makes my vision go completely black for a moment. It feels like my body just freezes for a second with no thought, no vision and resumes a second later. I m not sure what it is, I ve always wondered and I can t seem to find any answers online.
Hi, if this has happened to you occasionally on hitting something on the head then it is a normal thing and is called as concussion. But if this occurs regularly even with hitting of small objects, then you need to be careful and consult a neurologist at the earliest.