Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Pityriasis lichenoides et varioliformis acuta ?
    ### Response:
    Pityriasis lichenoides et varioliformis acuta (PLEVA) is the acute form of a skin condition called pityriasis lichenoides. Affected people generally develop a few to more than one hundred scaling papules which may become filled with blood and/or pus or erode into crusted red-brown spots.
    