Tattoo a week has been itching may be wound scabs, local infection or contact dermatitis, etc., can be dealt with according to the cause, usually including general treatment and medication. 1. Wound scabs: a normal phenomenon. Prohibit scratching with hands, and after the tattoo should pay attention to keep the tattoo dry, the duration is usually one week, to avoid wound infection. 2. Local infection: anti-infection treatment should be given. May choose ceftazidime, amoxicillin and other drugs. Serious infection can choose intravenous drip. 3. Contact dermatitis: allergic reaction to dyes, etc. Oral antihistamine drugs such as loratadine can be used. If the symptoms can not be relieved, you need to go to the hospital to use a laser to wash off the tattoo. Patients with severe itchy skin should go to a regular hospital in time to have a professional doctor to check, identify the cause and deal with the cause. The above medications should be used in accordance with medical advice.