<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hello Doc... ummm, I wiped out 4 days ago on the ice, flipped right back and smacked the back of my head... felt like I crushed it... also ...right after... it felt like there was a massive rush of blood streaming down my skull into my neck...weird... it was internal... i didnt break the skin... I had all the symptoms of a mild concussion... only lasted a hour, and i havent had to take any sort of pain relief... thus far ... but my head feels strange... p.s. only a walnut size bump at the very top... it is finally gone... --- I feel a little dizzy now and then - doesnt last long ... and my head feels weird ...do i need to worry? -- thank you for your time response - Laurie  <response>: Hi, Welcome to Chat Doctor forum. As you describe it appears that you had a hard injury to the head. Resulted in a bump, and it resolved. There is no vomiting, and unconscious less, so it may not be a concussion. Anyhow I advise you to consult a neurologist for diagnosis or excluding the concussion. You may need to have a C.T.scan for diagnosis. Wishing for a quick and complete recovery. Thank you. 