herpes zoster
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- DermNet - Herpes zoster
- Better Health Channel - Shingles
- Mayo Clinic- Shingles
- MSD Manual - Professional Version - Herpes Zoster
- Centers for Disease Control and Prevention - Shingles (Herpes Zoster)
- Healthline - Shingles: Everything You Should Know
- National Center for Biotechnology Information - Herpes Zoster
- American Academy of Ophthalmology - What Is Shingles (Herpes Zoster)?
- WebMD - Shingles: What You Should Know
- Cleveland Clinic - Shingles
- Verywell Health - Shingles
- Mount Sinai - Shingles
herpes zoster, acute viral infection affecting the skin and nerves, characterized by groups of small blisters appearing along certain nerve segments. The lesions are most often seen on the back and may be preceded by a dull ache in the affected site. Herpes zoster is caused by the same virus as that of chicken pox; it probably constitutes the response of the partially immune person, resulting from the reactivation of a latent virus, whereas chicken pox is the response of the non-immune host. In most cases, spontaneous recovery occurs within two weeks. However, neuralgia may persist for months or even years after recovery from the infection. Herpes zoster is contagious if blisters have opened and the person with whom the virus comes into contact has not been previously affected by chicken pox (contagious spread causes chicken pox rather than herpes zoster).