Pityriasis lichenoides et varioliformis acuta (PLEVA) is a rare skin disorder characterized by the development of red, scaly papules and vesicles on the skin. The exact prevalence of PLEVA is not well-established, as it is considered a relatively uncommon condition. However, it is estimated to affect approximately 1 in 100,000 individuals.
PLEVA can occur at any age, but it is most commonly seen in children and young adults. The condition typically presents with sudden onset of multiple lesions that may be itchy or painful. The lesions often evolve over time, with some developing into pustules or crusting. The exact cause of PLEVA is unknown, but it is thought to involve an abnormal immune response.
Diagnosis of PLEVA is based on clinical presentation and may require a skin biopsy for confirmation. Treatment options for PLEVA include topical corticosteroids, phototherapy, and systemic medications such as antibiotics or immunosuppressants. The prognosis of PLEVA varies, with some cases resolving spontaneously within months, while others may persist or recur.
In summary, Pityriasis lichenoides et varioliformis acuta is a relatively rare skin disorder affecting approximately 1 in 100,000 individuals. It is characterized by the development of red, scaly papules and vesicles on the skin. Diagnosis is based on clinical presentation and treatment options include topical corticosteroids, phototherapy, and systemic medications.