Bumps on the thighs are mostly considered for the following diseases: 1. Fungal diseases, such as ringworm, are mainly seen on the extensor or flexor side of the thighs as circular erythema with a lightly stained center and covered with a thin layer of chaff, mainly caused by keeping pets at home, and untreated nail or foot fungus. It is possible to take itraconazole capsules orally, and topical medications such as bifenazole spray and compound clotrimazole cream can be used topically. 2. It is considered to be peripapillary keratosis, a skin disease mainly caused by abnormal keratinization of the hair follicle mouth, which is a hereditary skin disease and can be clinically manifested by the appearance of small bumps on the thighs, like chicken skin. In the treatment, it is necessary to keep the skin moisturized by using topical moisturizing creams, emollients, and also a mixture of retinoic acid ointment and urea vitamin E cream for external use. Therefore, for bumps on the thighs, it is necessary to go to a regular hospital and under the guidance of a dermatologist to perform the appropriate laboratory tests, such as fungal smears, which can determine whether ringworm is present, followed by the appropriate clinical treatment.