Red pimples on my body, no pain, no itching

The body shows red lumps do not hurt not itch, most common is to consider allergic purpura. This situation is normal by bacterial infection, viral infection; or eat some easily allergic food, such as seafood, fish shrimp crab, etc.; there are also some drugs, such as cephalosporin, amoxicillin, furazolidone, sulfa and other factors caused by the body ecchymosis, petechiae, belongs to an allergic skin disease. This red spot is not pressure fade, no pain or itching, anaphylactoid purpura treatment is mainly for the cause of treatment. There is also a case considered pityriasis rosea, but also in the body showed no symptoms of red pimple.