Itching on both sides of the jaw may be caused by acne, contact dermatitis, eczema and so on. 1. Acne: The pathogenesis is still not fully elucidated, genetic, endocrine, emotional and dietary factors may lead to acne. It is most common in young men and women between the ages of 15 and 30, with lesions occurring on the cheeks and forehead, manifesting as pimples, papules, pustules, etc., and may be itchy, so itchy on both sides of the jaw may be caused by acne. 2. Contact dermatitis: If the sides of the jaw come into contact with an exogenous irritant or allergic substance, resulting in an inflammatory reaction at the contact site, erythema, pimples or blisters may appear at the contact site, and itching often occurs. 3. Eczema: It is an inflammation of the superficial dermis and epidermis caused by a variety of internal and external factors. Acute eczema occurs in the face, ears, hands and other parts of the body, often manifested as erythema on the basis of the tip of the needle to the size of a grain of papules, pimples, self-conscious itching, so the sides of the jaw is very itchy may be eczema caused by. The symptoms of itching on both sides of the jaw are recommended to consult a doctor in a timely manner, to clarify the cause of the disease, under the guidance of the doctor to treat the cause.