A professional who diagnoses and treats organic diseases and disorders of nervous system. Responsibilities include:

• Orders and studies results of chemical, microscopic, biological, and bacteriological analyses of patient's blood and cerebro-spinal fluid to determine nature and extent of disease or disorder.
• Identifies presence of pathological blood conditions or parasites and prescribes and administers medications and drugs.
• Orders and studies results of electroencephalograms or x rays to detect abnormalities in brain wave patterns, or indications of abnormalities in brain structure.
• Advises patient to contact other medical specialist, as indicated.