Overview of Nervous System Disorders

What is the nervous system? 

• central nervous system - consisting of the brain and spinal cord.

• peripheral nervous system - consisting of all other neural elements.

  

In addition to the brain and spinal cord, principal organs of the nervous system include the following:

• eyes

• ears

• sensory organs of taste

• sensory organs of smell

• sensory receptors located in the skin, joints, muscles, and other parts of the body

What are some disorders of the nervous system?

The nervous system is vulnerable to various disorders. It can be damaged by the following:

• trauma
• infections
• degeneration
• structural defects
• tumors
• blood flow disruption

Disorders of the nervous system:

• vascular disorders - such as stroke, transient ischemic attack (TIA), subarachnoid hemorrhage, subdural hemorrhage and hematoma, and extradural hemorrhage

• infections - such as meningitis, encephalitis, polio, and epidural abscess

• structural disorders - such as brain or spinal cord injury, Bell''s palsy, cervical spondylosis, carpal tunnel syndrome, brain or spinal cord tumors, peripheral neuropathy, and Guillain-Barré syndrome

• functional disorders - such as headache, epilepsy, dizziness, and neuralgia

• degeneration - such as Parkinson''s disease, multiple sclerosis, amyotrophic lateral sclerosis (ALS), Huntington''s chorea, and Alzheimer''s disease

Signs and symptoms of nervous system disorders:

The following are the most common general signs and symptoms of a nervous system disorder. However, each individual may experience symptoms differently.  Symptoms may include:

• persistent or sudden onset of a headache
• a headache that changes or is different
• loss of feeling or tingling
• weakness or loss of muscle strength
• sudden loss of sight
• memory loss
• impaired mental ability
• lack of coordination
• muscle rigidity
• tremors and seizures
• back pain which radiates to the feet, toes, or other parts of the body

The symptoms of a nervous system disorder may resemble other medical conditions or problems. Always consult your physician for a diagnosis.

Physicians who treat nervous system disorders:

Physicians who treat nervous system disorders may have to spend a lot of time working with the patient before making a probable diagnosis of the specific condition. Many times, this involves performing numerous tests to eliminate other conditions, so that the probable diagnosis can be made.

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