For itchy red bumps on the thighs, it is likely to be caused by eczema and urticaria, and in summer it may also be caused by mosquito bites. For eczema and hives, you should first avoid allergens and all kinds of external stimuli, such as hot water, excessive scratching, and contact with fur products. You should also avoid contact with chemical products, such as laundry detergents and detergents, and avoid foods that may cause allergies and irritations, such as seafood, chili peppers, coffee, alcohol, etc. For patients with obvious itching, first of all, oral antihistamines, such as loratadine, can be used, if necessary, with two kinds or alternately. Severe patients can also take oral or injectable glucocorticoids locally, but they should not be used for a long time. Local saline, boric acid and potassium permanganate solutions can also be applied, as well as glucocorticoid ointment. For the itching caused by mosquito bites, first of all, the residual acidic toxins of mosquitoes should be washed with soap and water, and local application of floral lotion, anemarrhea and furnace mannite lotion can be applied. For patients with infection, you can apply antibacterial drugs or antibacterial drug ointment topical application treatment. Folk also have some good methods, such as mint and watermelon rind for the application of the affected area, can achieve better results.