Post Herpetic Neuralgia

Postherpetic neuralgia (PHN) is a condition that occurs as a complication of shingles, which is caused by the reactivation of the varicella-zoster virus (the same virus responsible for chickenpox). Here are the key points about PHN:

1. Symptoms:

   • PHN causes persistent pain in the area where the shingles outbreak initially occurred.

   • The pain is often described as burning, sharp, jabbing, or aching.

   • It can last for three months or longer after the shingles rash has healed.

   • People with PHN may experience hypersensitivity to touch, making even light contact painful.

   • Less commonly, PHN can cause itching or numbness in the affected area.

2. Causes and Mechanism:

   • Shingles affects the nerves.

   • Once you’ve had chickenpox, the virus remains dormant in your body.

   • Reactivation of the virus leads to shingles, which can damage nerve fibers during the outbreak.

   • Damaged fibers send confused and heightened pain signals to the brain, resulting in PHN.

3. Risk Factors:

   • Age: PHN risk increases with age, especially in people over 60.

   • Severity of Shingles: Severe shingles cases with intense pain raise the risk.

   • Other Illnesses: Long-term diseases like diabetes.

   • Shingles Location: PHN is more likely if shingles occurred on the face or torso.

   • Delayed Treatment: Starting antiviral medication within 72 hours of rash appearance reduces PHN risk.

   • No Shingles Vaccine: Lack of vaccination increases susceptibility.

4. Complications:

   • People with PHN may develop other problems common with long-term pain.

   • The impact depends on the duration and severity of PHN.

Remember, early recognition and appropriate management are crucial for minimizing the impact of postherpetic neuralgia. Consult Dr Chinmoy Roy at Rajarhat Pain clinic  for proper evaluation and treatment.