Photodermatitis, sometimes referred to as sun poisoning or photoallergy, is a form of allergic contact dermatitis in which the allergen must be activated by light to sensitize the allergic response, and to cause a rash or other systemic effects on subsequent exposure. It is distinct from sunburn.
Photosensitive dermatitis ອາດຈະເຮັດໃຫ້ມີອາການບວມ, ຫາຍໃຈຍາກ, ມີອາການຄັນ, ເປັນຜື່ນແດງ, ບາງຄັ້ງກໍ່ມີລັກສະນະເປັນຕຸ່ມນ້ອຍໆ, ແລະຜິວໜັງລອກອອກ. ອາດມີຕຸ່ມຜື່ນທີ່ອາການຄັນອາດຍັງຄົງຢູ່ເປັນເວລາດົນນານ.