What is the Best way to recover from EPILEPSY?

I am 34 old Man. Few days back I fall down while I was riding my motor bike. I had lost my conscience and my tongue was deeply injured. CT Scan Scan report shows normal. But according to the Neurosurgeon deep tongue byte is the symptom of EPILEPSY. I want to know what is the reason of EPILEPSY and what is the treatment. Is it Infectious.