There are little red bumps on the legs. What's going on?

There are small red pimples on the legs. If the pimples fade after pressing, accompanied by obvious itching, it is considered that the rash caused by allergy is likely to be large. For treatment, glucocorticoid cream can be given locally, and oral antihistamine drugs can be used at the same time. For example, external use of aloson cream, oral loratadine syrup or cetirizine tablets. If the pimples are purplish red, they do not fade after pressing. It may be purpura. Blood routine, coagulation function and urine routine need to be checked. If due to upper respiratory tract infection, coagulation function and blood routine no abnormal rash, consider the possibility of allergic purpura, allergic purpura easy to involve the kidney, so need to regularly review urine routine, under the guidance of the doctor regular medication treatment, can be given antihistamine oral, at the same time with rutin tablets vitamin c to improve capillary permeability treatment, must pay attention to rest, prevent fatigue.