Red bumps on the thighs, such as itching symptoms, may be caused by eczema or urticaria, should avoid contact with allergens, should also avoid eating allergic and spicy foods, such as seafood, chili peppers, fennel, onions, garlic, etc., and should avoid excessive scratching and friction, so as not to cause infection and ulceration. This situation can be the first oral antihistamine drugs, commonly used in loratadine, you can also choose similar drugs to alternate oral, local choice of glycerine lotion for application, serious patients can also apply glucocorticosteroid, such as the combination of infection, but also the application of iodine povidone for disinfection. If the red bumps on the thighs appear painful symptoms, consider infectious lesions, common sebaceous cyst infection and folliculitis, etc., should choose sensitive antibacterial drugs for treatment, mainly cephalosporins and penicillins and macrolides, serious patients also need to be given intravenous drip treatment. When the activity is obvious, you can consider using magnesium sulfate for local wet compresses, such as the formation of abscesses, but also need to timely incision and drainage, removal of necrotic material, the application of hydrogen peroxide, iodophor, saline repeated rinsing when clean, to promote the growth of granulation tissue.