Here are the major disorders that may happen after receiving a head injury.

	Concussion: A sudden shake that knocks you out and you may lay still for several minutes.
	Stroke: An injury to the brain when a blood vessel breaks.
	Cerebral Palsy: A spasm in your muscles that may develop into Parkinson's disease.
	Encephalitis: Is an inflammation of the brain and is very risky to develop diseases.
	Meningitis: Is an inflammation of the meninges. Meninges are a protective shield; like your skull to your brain.
	Brain Tumor: An un-natural tissue inside an organ. It can grow in rapid speed and can also develop into cancer.
	Multiple Scleroses: A disease that is classified by the destruction of microscopic areas of the brain.
	Parkinson's Disease: A disorder in the muscles and nervous system that makes you have pains in your muscles that ache.
	Alzheimer's Disease: A disease that makes you retrace your past  at any time. It can also loose memory after  incidents.
	Paralysis: The meaning that you are not able to move well because your muscles can not function.
	Convulsions: A spasm that makes your muscles react to usually happening when you are functioning for a long  period of time.
	Embolism: The process of a blockage in your blood vessel than can develop into a blood clot.
	Epilepsy: A disorder characterized by sudden attacks or seizures. This may  happen when you have a seizure, it is not from infections,  injuries, tumors, or any other causes.