There are many types of drug rashes, including fixed drug rashes that can recover on their own, with the rash taking about 10 days to subside, and involvement of the perineum with erosions delaying the course of the disease. Other types of drug rashes have a relatively low likelihood of recovering on their own. Drug rash is a skin and mucous membrane reaction caused by drugs that enter the body through injection, oral intake, inhalation and other means. There are many types of manifestations of drug rash, in addition to fixed drug rash generally no systemic symptoms or systemic symptoms are relatively mild can be self-recovery, other types of drug rash are required to systematic use of medication, common rash type, urticaria type of drug rash will appear fever, shock and other systemic symptoms, to seek medical attention to give anti-allergy, anti-inflammatory, anti-shock treatment. Erythrodermic drug rash, epidermal necrolysis drug rash, erythema multiforme drug rash systemic symptoms may be life-threatening, the need for timely access to hospitals, timely and adequate use of hormones or immunosuppressive drugs, can not rely on self-recovery. Severe drug rash may be life-threatening, must be prevented and early detection, eliminate drug abuse, keep in mind their own allergy history, once found that the appearance of drug rash must be as early as possible to seek medical treatment, so as not to delay treatment.