A neurosurgeon is a physician who specializes in the diagnosis and surgical treatment of disorders of the central and peripheral nervous system including also brainwaves, cranial nerves, nerve roots, peripheral nerves and craniocervical disorders. A neurosurgeon usually performs surgical treatment in case of brain tumor, malformations (e.g. vascular tumor and aneurysms) and traumatic injuries of nervous system. During the first visit, the neurosurgeon examines the patient, suggests treatments and issue prescriptions if necessary. The neurosurgeon also gives advises about prevention the nervous system disorders and coordinates subsequent treatment planning.