Hello, Almost 5 years back i hit my lower back while playing and fainted.Im now 16.Since almost 3 yrs i have been experiencing these weird jerks in my head.It first started from a severe jerk in the back of my neck while i was lying down one day quite afew months after i fainted.Now i get these headache kind of jerk in my head as if its a nerve pulling or something and often also my vision becomes blurred(almost like a black out for like around 5 seconds) and my face and head seems to get heated up after i come back to normal after those few seconds. Is there anything you can consult?Is it a matter of worry?cause i did not consult any doctor until now. Thankyou.