Neurology is the medical specialty that diagnoses disorders and treats illnesses of the nervous system

Including the central nervous system

• Cerebrum
• Brainstem
• Cerebellum
• Meninges
• Spinal Cord

And the perpheral nervous system

• Cranial Nerves
• Spinal Roots
• Autonomic Nervous System
• Peripheral Nerves
• Muscle

Neurologists are physicians who, by taking a careful history and performing examination, try to identify which part of the nervous system is abnormal (anatomy)...  

Then, by special testing, try to understand what is the underlying cause of the disorder (etiology)...

Order specific treatments to reverse and stabilize the condition...

And, finally, counsel the patient and family on steps they can take to improve their health and prevent future disease and disability.