What Causes Headache In A Child After An Accident?

Question: At around the age of 4 my son fell in a title shower and hit on the left side of his head. He started having terrible headaches a few years later. When he was 9 he stared getting pimples and pubic hair, his body has matured very rapidly but, his mind has not. At the age of 11 he started being confused and would have colored spots in his eyes then would have staring seizures, then he started having convulsive seizures. He began having trouble remembering everyday words. His speech sometimes is affected and he has a break in between his words. He has had an MRI, echocardiogram, and an EEG. The only thing that showed up in these test was the EEG which showed abnormal activity on the left side of the brain. He has seen a Neurologist (which does not care what the problem is, he only wants to give a medication to fix the problem) and has taken 3 different kind of seizure medications which none of the medications have helped. What seems to bring on the seizures is darkness. Just going outside when it is dark or riding in the car when it is dark outside affects him. He can't walk into a dark room without having spots in his eyes and most of the time that will lead into a seizure. A lot of nights when he closes his eyes to sleep he starts having spots in his eyes about 30 seconds after his eyes are closed, sometimes that leads to a staring seizure then on to a convulsive seizure. The last seizure he had was a couple days ago and I noticed that during the seizure that his palms and hands were almost dripping wet with sweat. Many nights he has a hard time going to sleep. Any suggestions on any test that can be done to find out what the problem is or any information you can give me will be appreciated. Thank you

Is there any treatments for this condition?