Insect bite dermatitis symptoms and prevention: Insect bite dermatitis is an inflammatory skin reaction caused by mosquito bites on the human body, accompanied by intense itching. Insect bite dermatitis is most often manifested as red swollen bumps, mostly oval, often with a small blister or small petechiae at the top. Rarely, dermatitis presents as large blisters similar to chickenpox or only small petechiae, or occasionally as red nodules or hemorrhagic plaques. Children react more strongly to bites, which usually present as large, swollen erythematous patches. Patients usually have no systemic symptoms such as fever. However, due to scratching, many patients develop impetigo (commonly known as “yellow sores”), which causes fever, pain, and other discomfort. In some cases, itchy nodular rash is caused by improper treatment, and the condition is difficult to treat. Oral antihistamines have a good effect on insect bite dermatitis. Topical medications can be chosen from stove glycolic lotion, hormone creams or preparations containing mint, all of which can achieve an anti-itching and anti-inflammatory effect and can be cured after 2-10 days. Prevention of insect bite dermatitis should pay attention to indoor hygiene, placing mosquito nets, mosquito incense to repel mosquitoes. Outdoor activities should be well protected, wear long-sleeved clothing, appropriate spray mosquito repellent lotion. Once bitten by mosquitoes, should avoid scratching, bites more serious people should promptly go to the hospital to avoid aggravation of the disease.