Neurology is a branch of medicine involved with the examination and analysis of disorders of the nervous system. The nervous system could be a complex; sensible that regulates and coordinates body activities and it has two major divisions are central nervous system and peripheral nervous system together with their coverings, blood vessels, and all effector tissue, like muscle. The doctor who specialized in neurology is understood as specialist. The specialist trained to analyze, or diagnose and treat a neurological disorder that affects the brain, spinal cord, and nerves. Neurologists do not perform surgery if any patient needs surgery they refer to neurosurgeons.