Red pimples on my legs. Itchy.

Red pimples on legs are itchy and may be caused by the following conditions: 1. Eczema is an allergy caused by food, drugs, pollen, sunlight and other factors, thus causing red pimples to itch on the skin. In this case, anti-allergic drugs can be taken. 2. Urticaria, is a variety of internal and external stimuli, showing bright red or white wheals of varying sizes on the skin, accompanied by itching, subside within a few hours, and then will show, can occur several times a day, treatment can choose antihistamine treatment.3. Tinea cruris, caused by fungal infection, in this case can be treated with external antifungal ointment.