In March 2015, I had a head on collision from which I was unconscious. I suffered concussion for a good few weeks thereafter. Since then I have been suffering from what I thought was lack of concentration, but my Neurologist Consultant believes this to be memory loss (awaiting further tests). I developed Tinnitus, which can last for days, and can now wake me from my sleep. I am awaiting an appointment at the ENT Hospital. Anyone else had similar experiences? Would be grateful to hear from anyone please.