Shingles (herpes zoster)
About Shingles (herpes zoster)
A viral infection caused by varicella (reactivated chickenpox virus). After recovery from chickenpox, some virus particles continue to survive for decades. This surviving virus lives in clusters of nerve cells called nerve roots where it is protected from your immune system . The virus re-emerges many years later causing painful lesions that look like pimples. They typically appear on only one side of the body and are localized to one area. Stress, old age and other infections can cause the re-emergence of the virus. Also called herpes zoster.Symptoms
Initial symptoms consist of tingling and burning of the skin, followed by pain which can be intense. Later a rash develops consisting of bumps, blisters , pimples, crusting. The rash is typically only on one side of the body, and in one area. Unfortunately some patients can have persistent symptoms even after the rash has resolved. This is called post herpetic neuralgia.Tests & Diagnostics
A history and physical exam will be performed. If needed, a culture of blister fluid can be used to identify the virus.Prescription medications
Conventional treatment summary
Treatment involves antiviral medications (acyclovir/Zovirax, famciclovir/Famvir, valacyclovir/Valtrex), pain medications, and occasionally steroids. Treatment is more effective the sooner it is started.Medical specialties
Internal Medicine · Pediatrics · Family Practice · Infectious Disease Medicine
This page is educational content, not medical advice. Always consult a qualified clinician for diagnosis and treatment of Shingles (herpes zoster).