Hydroa vacciniforme
Hydroa vacciniforme
Hydroa vacciniforme (pronunciation: hy-dro-uh vak-sin-i-form) is a rare skin disease that typically begins in childhood.
Etymology
The term "Hydroa vacciniforme" is derived from the Greek words "hydor" meaning water, and "vaccinium" meaning cowpox, which refers to the vaccine-like scars that the condition leaves on the skin.
Definition
Hydroa vacciniforme is a photosensitivity disorder, which means it is triggered by exposure to sunlight or ultraviolet light. It is characterized by recurrent, vesicular eruptions that evolve into vacciniform scars, predominantly on sun-exposed skin.
Symptoms
Symptoms of Hydroa vacciniforme include skin lesions that appear after sun exposure, which may be itchy or painful. These lesions can develop into blisters, which may become necrotic and leave behind vacciniform scars. Other symptoms can include fever, malaise, and lymphadenopathy.
Causes
The exact cause of Hydroa vacciniforme is unknown, but it is thought to be an abnormal response to ultraviolet light. Some studies suggest a possible link to Epstein-Barr virus (EBV), but this is not yet fully understood.
Diagnosis
Diagnosis of Hydroa vacciniforme is based on the characteristic clinical features, the patient's history of sun exposure, and the results of skin biopsy. Additional tests may be performed to rule out other conditions, such as porphyria or polymorphous light eruption.
Treatment
Treatment for Hydroa vacciniforme primarily involves avoiding sun exposure. Other treatments may include topical steroids, antimalarial drugs, and in severe cases, systemic immunosuppressants.
Related Terms
- Photosensitivity
- Vacciniform
- Epstein-Barr virus
- Lymphadenopathy
- Porphyria
- Polymorphous light eruption
External links
- Medical encyclopedia article on Hydroa vacciniforme
- Wikipedia's article - Hydroa vacciniforme
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