Drug allergies appear red dots all over the body without itching, usually measles or scarlet fever type of rash, also known as rash type of rash, is the most common type of drug rash, commonly used in the application of penicillin (especially semi-synthetic penicillin), sulfonamides, antipyretic analgesic, barbiturates, patients.
1. Measles-type drug rash: Measles-type drug rash is similar to measles, the lesions are red papules of the size of a needle tip to a grain of corn, densely and symmetrically distributed, and can be generalized all over the body, mostly on the trunk, and can be accompanied by petechiae in severe cases.
2. Scarlet fever-type rash: scarlet fever-type rash lesions are diffuse bright red spots, or red macules or macules of rice grains to beans, dense symmetrical distribution, often from the face and neck to the trunk and limbs distribution, especially in the folds or limb flexion is more pronounced, lesions can be dense, fusion, morphology is very similar to the scarlet fever lesions.
Drug allergies appear red spots all over the body does not itch, there may also be other reasons, this situation needs to be timely medical care, a clear diagnosis of the standardized treatment in accordance with the doctor’s instructions.