Neurology is the branch of medicine concerned with the examination and analysis of disorders of the nervous system. The nervous system is a complex; practical that regulates and coordinates body activities and it has two major divisions’ central nervous system and peripheral nervous system including their coverings, blood vessels, and all effector tissue, such as muscle. The doctor who specialized in neurology is known as neurologist. The neurologist trained to investigate, or diagnose and treat a neurological disorder that affects the brain, spinal cord, and nerves. Neurologists do not perform surgery if any patient requires surgery they refer to neurosurgeons.