Girls with small bumps on the legs may be the cause of keratosis pilaris, insect bite dermatitis, eczema, etc., can be helped by topical drugs, oral medication and other methods of treatment. 1. Keratosis Pilaris: Keratosis Pilaris often manifests itself in follicular pimples on the legs of girls, dry and rough skin and other symptoms, such patients can be applied locally Vitamin A cream, tazarotene gel, urea cream, salicylic acid ointment and other ointments to help treatment. Severe cases also need to take oral vitamin A, vitamin E, vitamin A acid and other drugs. 2. Insect bite dermatitis: If girls have a history of skin exposure on the legs, mosquito bites, etc., it may lead to the occurrence of insect bite dermatitis, showing red bumps on the legs, itching and other symptoms. Patients can apply local glycerine lotion, tretinoin cream and other creams to help treatment, itching significant people also need to take cetirizine and other drugs at the same time. 3. Eczema: Allergies, heredity, immune abnormalities, hormone level changes and other factors may lead to eczema, which may appear in the legs, papules, erythema, vesicles, oozing and other damage. These patients can apply topical ointments such as dexamethasone ointment, tretinoin cream, tacrolimus ointment, etc. to help with anti-inflammatory and anti-allergy treatments, which in turn will improve the symptoms. It should be noted that the above treatments should be carried out under the guidance of a physician, and the medication should be used in accordance with the doctor’s instructions to avoid the occurrence of adverse reactions.