The common causes of very itchy face are: urticaria, chicken pox, contact dermatitis, insect bite dermatitis, solar dermatitis and so on. 1. Urticaria: usually caused by certain food and drug allergies, bacterial infections, mental factors, etc., resulting in a temporary increase in the permeability of local blood vessels, the lesions can be manifested as intense pain and itching, accompanied by red lumps, which can be found on the face. 2. Chickenpox: an infectious disease caused by varicella zoster virus. Often appear in 2~10 years old children, patients will appear headache, fever, nausea and other pre-symptoms, with the development of the disease can be manifested as the whole body green bean size blisters, accompanied by itching. 3. Contact dermatitis: due to contact with exogenous substances after the occurrence of inflammatory reactions, can be manifested as contact with the site of erythema, edema, papules, etc., often accompanied by a sense of itching. 4. Insect bite dermatitis: mosquito bites can lead to bites of the skin erythema, papules, doughnut-like manifestations, and itching. 5. Solar dermatitis: usually caused by strong sun exposure, can be manifested as sun-exposed skin erythema, pain, flaking and other symptoms, flaking process can be accompanied by itching. There are many reasons why the face is very itchy, it is recommended to consult a doctor in time, clear diagnosis and symptomatic treatment.