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Overview

What Is Eczema Herpeticum?

Eczema herpeticum is a rapidly spreading infection caused by herpes simplex virus, usually HSV-1 or HSV-2. The virus can enter areas affected by eczema or another skin-barrier disorder and cause painful blisters and sores. Eczema itself is not herpes, is not caused by a virus, and is not a form of herpes. Because this infection can become serious quickly, suspected eczema herpeticum needs prompt medical assessment.

Emergency Warning Signs

Emergency Warning Signs of Eczema Herpeticum

Urgent medical care

Get help quickly for a suspected infection

Seek same-day medical care for rapidly spreading painful blisters or punched-out sores on eczema-affected skin, fever, marked illness, extensive involvement, immune suppression, inability to drink, or suspected eye involvement. Seek emergency care for eye pain or vision changes, confusion, fainting, breathing difficulty, or severe worsening. Do not wait for a routine appointment.

Symptoms

Eczema Herpeticum Symptoms

  • Painful blisters that spread rapidly (vesicles) can develop across eczema-affected skin.
  • Round, punched-out open sores (erosions) may appear where blisters break.
  • Crusting can form over the blisters and erosions as they dry.
  • The affected skin may burn or tingle before or during the outbreak.
  • Fever may occur with eczema herpeticum.
  • Nearby lymph nodes may become swollen (lymphadenopathy).
  • You may feel generally unwell, tired, or ill (malaise).

How It Spreads

How Eczema Herpeticum Spreads

Herpes simplex virus spreads mainly through direct skin-to-skin contact with an infected area or contact with oral secretions, such as those from a cold sore. It can enter eczema-damaged skin through the weakened barrier, causing herpes simplex eczema herpeticum. Touching or scratching lesions can move the virus to nearby skin or the eyes; this is not the same as eczema spreading.

  • Avoid kissing or direct skin contact with someone who has an active cold sore.
  • Do not share towels or lip products during a herpes outbreak.
  • Wash your hands after touching lesions or applying skin treatments.
  • Avoid touching your eyes after contact with affected skin.

Risk Factors

Eczema Herpeticum Risk Factors

Underlying risks

Atopic dermatitis or another chronic skin-barrier disorder can make infection more likely, especially when eczema is active or poorly controlled. A history of HSV exposure and reduced immune defenses, including immune suppression, can also increase risk.

Exposure risks

Close contact with someone who has an active cold sore can expose broken skin to HSV. Sharing personal items that touch lesions, scratching, or leaving open skin untreated can further increase the chance of infection, including eczema herpes on the hand.

Complications

Eczema Herpeticum Complications

  • Bacterial infection can develop in the affected skin.
  • Extensive illness can cause dehydration.
  • Healing may leave scars or changes in skin color.
  • Herpes can infect the eye and threaten vision.
  • The infection can rarely involve other organs.
  • People with weakened immune systems can develop widespread infection.

Diagnosis

Diagnosing Eczema Herpeticum

Diagnosis is often based on the rapid onset of painful, similar-looking blisters or punched-out erosions on eczema-affected skin, together with your medical history and a physical examination. The pattern can help distinguish eczema herpeticum from a usual eczema flare, but appearance alone cannot confirm the infection.

Tests and conditions that can look similar

A clinician may swab or scrape a fresh lesion for HSV testing and may test for bacteria if a bacterial infection is also possible. Eye symptoms may require an eye examination. Clinicians may distinguish eczema herpeticum from impetigo, shingles, allergic reactions, dyshidrotic eczema, and herpetic whitlow; testing can help clarify questions such as hand herpes or eczema and herpetic whitlow versus dyshidrotic eczema. When the appearance and symptoms strongly suggest infection, treatment may begin before test results return because delays can allow rapid progression.

Treatment Options

Eczema Herpeticum Treatment Options

Eczema herpeticum requires prompt antiviral treatment. The choice between oral or intravenous medicine and outpatient or hospital care depends on illness severity, the extent of skin involvement, immune status, hydration, ability to take oral medicine, and whether the eyes are affected.

Oral antiviral treatment

Stable people who can drink and take medicine may receive a prescribed oral antiviral. Take the medicine for the full prescribed course, do not use leftover medicines for self-treatment, and continue clinician-directed eczema and wound care. Follow-up helps confirm that the infection is improving and that the skin barrier is healing.

Extensive, rapidly worsening, or severe infection may require intravenous antivirals and hospital care, particularly when someone cannot take oral medicine, is immune suppressed or dehydrated, feels systemically ill, or may have eye involvement. Treatment may also include fluids, pain control, wound care, and specialist eye review when appropriate. These measures are part of eczema herpeticum treatment and should be guided by a medical team.

Prevention

Preventing Eczema Herpeticum

  • Follow your eczema treatment plan to help maintain the skin barrier.
  • Moisturize as directed to protect and support the skin barrier.
  • Keep your fingernails short to reduce damage from scratching.
  • Wash your hands after touching eczema-affected or blistered skin.
  • Avoid direct contact with active cold sores.
  • Do not share personal items that touch lesions, such as towels or lip products.
  • Seek medical advice promptly for a new painful blistering rash.

Outlook and Prognosis

Eczema Herpeticum Outlook and Prognosis

Symptoms commonly begin improving after effective antiviral treatment, but the skin may take longer to heal fully. The outlook depends on how quickly treatment starts, how extensive the infection is, immune health, and whether the eyes are involved. Recurrence of HSV or poorly controlled eczema can increase the risk of another episode, although not every eczema flare becomes eczema herpeticum.