Contact dermatitis does not necessarily itch. When contact dermatitis occurs, it is recommended to go to the hospital for further examination to find out the cause of the disease and treat the symptoms. Contact dermatitis is mostly caused by bacterial infection or contact with allergic substances. In mild cases, the symptoms include itchy skin and small red rashes. In severe cases, the skin may become painful. Patients with contact dermatitis can be treated with topical ointments (such as dexamethasone acetate cream), anti-inflammatory drugs (such as cephalosporin) or antihistamines (such as loratadine) as prescribed by the doctor. The fundamental treatment still need to find the causative factors, remove the cause, from the root of the disease. Patients with contact dermatitis is recommended to go to the hospital in time, clear cause, under the guidance of the doctor symptomatic treatment, do not blindly self-medication.