Pityriasis lichenoides et varioliformis acuta (PLEVA) is a disease of the immune system. It is the more severe version of pityriasis lichenoides chronica. The disease is characterized by rashes and small lesions on the skin.
Pityriasis lichenoides et varioliformis acuta (PLEVA) , ເຊິ່ງເອີ້ນກັນວ່າພະຍາດ Mucha-Habermann, ແມ່ນສະພາບຜິວໜັງທີ່ຫາຍາກທີ່ເຮັດໃຫ້ເກີດເປັນຕຸ່ມສີນ້ຳຕານແດງ ແລະ ມີເກັດເປັນເກັດໆ. Papules ອາດຈະກ້າວໄປສູ່ການເປັນ vesicles, pustules, ແລະ ulcers, ແລະ lesions ເຫຼົ່ານີ້ສາມາດກ່ຽວຂ້ອງກັບ pruritus ຫຼືຄວາມຮູ້ສຶກບາດແຜ. ມັນມັກຈະມີອາການຄັນ ຫຼືຮູ້ສຶກຄືກັບການເຜົາໄໝ້. ໂດຍທົ່ວໄປແລ້ວ PLEVA ມີຜົນກະທົບຕໍ່ລຳຕົ້ນ ແລະ ແຂນ ແລະຂາ, ໂດຍສະເພາະໃນບໍລິເວນຜິວໜັງ. ຜື່ນອາດຈະມາແລະເປັນໄປຕາມເວລາ, ແກ່ຍາວເປັນເວລາຫລາຍປີໃນບາງກໍລະນີ. Pityriasis lichenoides et varioliformis acuta (PLEVA), also known as Mucha-Habermann disease, is an uncommon cutaneous inflammatory rash characterized by diffuse red-brown papules in various stages with a mica-like scale on more established lesions. The papules may progress to form vesicles, pustules, and ulcers, and these lesions can be associated with pruritus or a burning sensation. PLEVA favors the trunk and proximal extremities, especially in the flexural regions. This rash tends to relapse and remit with variable duration, sometimes lasting up to years.