Papular urticaria is a papular skin disease caused by the bite of certain arthropods. Brief diagnosis] 1, the lesion characteristics: fusiform, windbag-like papules, bright red, the central papules can have blisters; 2, distribution: mostly seen in exposed areas, or body parts, such as waist, limbs, shoulders, etc.. Can be linear distribution along the animal crawling route; 3, itchy; 4, can be combined with skin infections. Prevention points】 1, eliminate mosquitoes; 2, do not play in the grass; 3, minimize skin exposure opportunities; 4, keep clothing, bed tidy; 5, before using the cool mat should be boiling water, and sun exposure. Basic treatment】 Topical corticosteroid ointment and topical drugs such as glyburide lotion; antihistamine can be used orally to stop itching; prevent skin infections, etc. [Friendly reminder] Try not to scratch the skin to avoid skin infection.