Children with dense small bumps on the legs and itchy, the main consideration of papular urticaria, eczema and dermatophytosis, etc., you can take general treatment, topical drugs, as well as oral medication and other treatments. 1. papular urticaria: also called insect bite dermatitis, mainly pimples, can be accompanied by intense itching. It often occurs in the summer, and is especially likely to occur in exposed areas of the skin, such as the legs of children. Zinc oxide ointment can be used to astringe, while oral loratadine anti-allergy. 2. Eczema: Eczema is also a major cause of rashes with itching. Consider checking for allergens and then avoiding them with a purpose. Treatment is mainly moisturizing, external glycerine lotion astringent, glucocorticoid anti-inflammatory, serious cases can take oral calcium, loratadine and other anti-allergy. 3. Dermatophytosis: mainly occurs in the family members also have fungal infections in children, for contact infection, can be used externally bifonazole ointment 2-3 weeks can be. Children’s legs have dense small bumps and itchy, there may be other reasons, it is recommended to go to the hospital dermatology department in a timely manner, to clarify the cause of the disease, to give targeted treatment, do not unauthorized use of medication.