Insect bite dermatitis can generally be cured in 5-10 days after regular treatment, but it also depends on the specific case and cannot be generalized. Insect bite dermatitis is in the mosquito bite after the local skin, resulting in a specific skin changes. When the mosquito bite, mosquito venom into the body, will trigger a hypersensitivity reaction, local erythema, papules, pain, and even ulceration symptoms. Through regular drug treatment, usually 5-10 days can make the local skin inflammatory reaction is suppressed, so as to achieve the effect of treatment. However, after the dermatitis has completely subsided, local temporary pigmentation may remain, but do not worry too much, the pigmentation will gradually fade with time. In addition, after the mosquitoes, if the symptoms are more serious, you need to go to the hospital dermatology for symptomatic treatment, so as not to delay the disease.