There are many small red dots on the thighs, consider the following possibilities: 1, may be perifollicular keratosis, in the thighs of the extension of the appearance of scattered in the consistency of the hair follicle papules, and part of the follicle keratosis, in the treatment can apply vitamin A acid ointment, or tazarotene gel to apply, while the application of moisturizers is also very necessary, such as vitamin E ointment, the disease are due to genetic and other factors. 2, It may be eczema, in addition to small red dots, you can also see papules, papules and other polymorphic rashes, and accompanied by a certain amount of itching, you can take oral levocetirizine hydrochloride capsules, 1 capsule every night, and apply mometasone furoate ointment, 1 time every night to carry out treatment. 3, the appearance of small red dots, petechiae, petechiae parallel to the surface of the skin pressure does not fade, consider the possibility of allergic purpura is relatively large, mainly The main reason is allergy or infection, you can apply compound glycyrrhizin capsules, combined with vitamin C capsules, and rutin tablets for treatment.