Hi I hit my head a week and a half ago while I was in Florida when I slipped and hit my head backwards quite hard on the pavement. I was not unconscious but I had a bad headache and my eyes hurt, I felt dizzy and lost my balance for a few minutes. I went straight to the hospital and they did a CAT scan which showed nothing. I was given paracetamol for my headache and nausea tablets. I returned to the UK a few days later. For the past week I have experienced on off headache. However yesterday afternoon I noticed pink rashes appeared all over my skin, I felt feverish, sweaty, had a headache and my bones from my lower back down to my ankles on the right side hurt. The rashes are all over my body and feel mildly itchy but mostly sore. I took antihistamine but my rashes have not improved. I have also been feeling quite tired and have had some breathing difficulty and been coughing a lot, Could this be related to my head injury? What do you think it could be?