What is the right thing to do if you do suffer a blow to the head?

The most important thing is once suffering a blow to head making sure that there is no environment where you are susceptible to suffering another one. If you are to get two concussion over a small period of time your chances of then developing any disease are much much worse.If you have a concussion you make experience light sensitivity, headaches, etc. If you have a concussion that you should sit out of doing any heavy contact sports and consider getting evaluated.