The red rash and itchy insect bites are considered to be insect bite dermatitis, which can be treated with oral medications as well as topical medications. 1. Oral drugs: insect bite dermatitis itching is significant when you can take oral levocetirizine hydrochloride tablets, loratadine tablets and other antihistamines for treatment. 2. Topical drugs: patients with insect bite dermatitis can also choose topical drugs for treatment, such as fluticasone propionate cream, compound camphor cream, peppermint glycerite lotion and other drugs, can also effectively relieve itching and other uncomfortable symptoms. It is recommended to go to the hospital for examination and diagnosis in a timely manner, under the guidance of a professional doctor to use medication, to avoid misunderstanding and aggravate the symptoms.