Pityriasis lichenoides et varioliformis acuta following measles rubella vaccine.

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Date: July-August 2020
Publisher: Medknow Publications and Media Pvt. Ltd.
Document Type: Article
Length: 1,017 words
Lexile Measure: 1560L

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Byline: Veeranna. Shastry, P.. Ranugha, Vinutha. Rangappa, P. Sanjaykumar

Pityriasis lichenoides represents a unique group of inflammatory skin disorders that include pityriasis lichenoides et varioliformis acuta, febrile ulceronecrotic Mucha-Habermann disease (a severe variant of pityriasis lichenoides et varioliformis acuta) and pityriasis lichenoides chronica.[1] Pityriasis lichenoides et varioliformis acuta is a cutaneous disorder characterized by crops of erythematous macules and papules on the trunk and flexural areas of the extremities. Reddish-brown crusted areas gradually develop and result in varioliform scarring. The etiology remains unknown. It is speculated to be an inflammatory reaction triggered by certain infectious agents, an inflammatory response secondary to T-cell dyscrasia or an immune complex-mediated hypersensitivity.[2] Few reports of pityriasis lichenoides et varioliformis acuta secondary to measles, mumps and rubella, influenza, tetanus and measles rubella vaccine have been described.[3],[4],[5],[6] Here, we describe a case of pityriasis lichenoides et varioliformis acuta following measles rubella vaccine.

A 6-year-old boy presented to the dermatology department of JSS Medical college, Mysuru with a history of reddish raised lesions over the trunk and extremities for 8 days. Initially, the lesions were asymptomatic, subsequently becoming itchy. There was no fever or constitutional symptoms. He had received measles rubella vaccine 7 days prior to the onset of lesions. He was not on any medications, and his previous vaccinations were uneventful.

On cutaneous examination, multiple, discrete erythematous papules, some with crusting, were seen bilaterally over the trunk, limbs and face. There were a few erosions over the abdomen and legs [Figure 1] and [Figure 2]. There were no mucosal lesions...

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Gale Document Number: GALE|A626737680