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Herpes Zoster
Herpes zoster, commonly known as shingles, is a viral infection caused by the varicella-zoster virus (VZV), the same virus that causes chickenpox. After a person recovers from chickenpox, the virus remains dormant (inactive) in nerve tissues near the spinal cord and brain. Years later, the virus may reactivate and cause shingles. Here’s a detailed overview of herpes zoster, including its causes, symptoms, diagnosis, treatment, and prevention:
Causes of Herpes Zoster (Shingles):
- After an initial infection with chickenpox (varicella), the virus remains dormant in nerve cells. Reactivation of the virus can occur due to various factors, including age, weakened immune system, stress, or illness.
Symptoms of Herpes Zoster:
Painful Rash:
- Typically appears as a single stripe or band of blisters that wraps around one side of the torso, although it can occur on other parts of the body as well.
- The rash usually develops in a specific dermatomal pattern (following the nerve pathway).
Other Common Symptoms:
- Burning, tingling, or numbness before the rash appears.
- Itching.
- Fever.
- Headache.
- Sensitivity to light.
- Fatigue.
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