Herpes Zoster Resource Center

Herpes zoster (shingles) is 1 of 2 distinctive manifestations of human infection with the varicella-zoster virus (VZV), the other being varicella (chickenpox). Chickenpox is a common and generally benign illness of childhood that is characterized by an exanthematous vesicular rash. Following resolution of this primary infection, VZV becomes latent in dorsal root ganglia until such time when a decrease in cellular immunity triggers the reactivation of the virus.

 

eMedicine Spotlight

  • Herpes ZosterDermatology
    Zoster is a common, predominantly dermal, and neurologic disorder caused by the varicella-zoster virus. The manifestation of zoster results in pain and characteristic cutaneous findings along the corresponding sensory dermatomes of the involved ganglia.
  • Herpes ZosterEmergency Medicine
    Most patients who develop zoster have a 2- to 3-day prodrome of pain, tingling, or burning in the involved dermatome. The primary physical finding is a rash in a unilateral dermatomal distribution; the rash may be erythematous, vesicular, pustular, or crusting, depending on the stage of disease. In the ED, diagnosis of herpes zoster is based primarily on clinical findings. However, in some patients, the presentation of herpes zoster can be atypical and may require additional testing.
  • Herpes ZosterInfectious Diseases
    Herpes zoster typically manifests as a vesicular rash in a unilateral dermatomal distribution associated with pain. The clinical manifestations of herpes zoster can be divided into the pre-eruptive phase (preherpetic neuralgia), acute eruptive phase, and chronic phase (postherpetic neuralgia). Incidence of herpes zoster increases with age, presumably through the general decrease in immune function that occurs with aging.
  • Herpes ZosterOphthalmology
    Herpes zoster ophthalmicus involves the tissues innervated by the ophthalmic division of the trigeminal nerve and accounts for 10-25% of all cases of shingles. The sequelae of herpes zoster ophthalmicus can be devastating and include chronic ocular inflammation, visual loss, and debilitating pain.
  • Varicella ZosterNeurology
    Varicella-zoster virus infection is an acute neurologic disease that warrants immediate evaluation. A spectrum of signs and symptoms can occur, including a self-limited painful rash, pain without skin manifestations, keratitis, vertigo, and spinal cord disease with weakness. Inflammatory involvement may include the leptomeninges. When the cervical and lumbar roots are involved, motor involvement may be seen, depending on the virulence and/or extent of migration.
 
 

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