An itchy skin rash is considered to be related to insect bite dermatitis, eczema, hives and other factors. You can use topical glucocorticoid drugs or oral antihistamines, which can help relieve the symptoms. 1. Insect bite dermatitis: mosquitoes in summer, mosquito bites can cause insect bite dermatitis, resulting in itchy skin rashes. It is recommended to get out of the environment where mosquitoes gather to avoid further aggravation of symptoms. Topical glycerine lotion, mometasone furoate gel coating, can effectively relieve itching. 2. Eczema: Skin rashes can also be considered related to eczema, the affected area may appear pimples, papules, accompanied by intense itching. Oral cetirizine and loratadine can be given, which have the effect of anti-inflammatory and anti-itching. Combined with topical hydrocortisone butyrate and mometasone furoate cream, it is conducive to controlling the condition. 3. Urticaria: contact with allergy-inducing food, drugs, environment, etc., resulting in skin erythema, wheals, itching. Antihistamine drugs such as fexofenadine and olopatadine hydrochloride can be given for treatment. Apart from this, there are many other skin diseases that can cause skin rashes and itching. It is recommended not to scratch the stimulus, to avoid inducing infection, if necessary, go to the hospital, clarify the cause of the disease, and then follow the doctor’s instructions for medication.