Hi , my daughter thinks she has suffered a concussion but i just want to be sure. she got hit in the head repeatedly. last year and the day after that she could barely walk ( was wobbling) and almost thew up and passed out , her eyes were blurry?

Loss of consciousness followed by difficulty walking or change in vision suggest a concussion. If the event happened last year and she returned to her normal functional baseline, it would appear she has no residual problem. If she does, she should see a doc for an evaluation.

Would agree, at least one of the head injuries did cause an acute brain injury (cerebral concussion). See a neurologist if symptoms have persisted and not adequately back to normal.