Neurology is a branch of medicine that deals with the study and treatment of disorders of the nervous system. It involves the study of the structure, function, and diseases of the brain and nervous system. The nervous system is a complex, sophisticated system that regulates and coordinates body activities. 

It has two major divisions: 

Central nervous system 

• The central nervous system includes the brain and spinal cord 

Peripheral nervous system 

• Involves all other neural elements such as eyes, ears, skin, and other "sensory receptors"

Neurologists: 

• Medical doctors who specialize in this field 

• They are trained to diagnose and treat neurological disorders that affect the central, peripheral, and autonomic nervous systems. 

Including but not limited to: 

• Strokes 

• Alzheimer's disease 

• Parkinson's disease  

• Multiple sclerosis 

• Amyotrophic lateral sclerosis (ALS) 

• Migraine 

• Epilepsy 

• Sleep disorders 

• Chronic pain 

• Tremors 

A variety of diagnostic tests are used to identify and treat neurological disorders including: 

• CT scans 

• MRIs 

•  PET scans 

• electroencephalography (EEG) 

• Lumbar punctures (spinal taps) 

Neurological disorders can be managed by neurologists using:  

• Prescription medication 

• Physical therapy 

• Other types of therapy 

• Providing guidance on lifestyle changes

In conclusion, neurology is a critical field of medicine that deals with the diagnosis, treatment, and management of disorders of the nervous system. It is a complex and challenging specialty that requires a deep understanding of the nervous system and its numerous disorders. Neurologists play a vital role in managing conditions that impact the brain and nervous system, significantly contributing to the overall well-being and quality of life of their patients.