The itchy legs and small red dots may be caused by allergic rash, dry skin, ringworm, and other diseases, which need to be seen by a professional doctor in time to determine the specific cause and give appropriate treatment. 1. Allergic rash: Allergic rash is usually caused by allergic factors that lead to abnormal immunity of the body, and patients mainly show skin erythema, redness and swelling often accompanied by different degrees of itching. If the patient is allergic to the quilt, the antibodies will release some chemicals, which will lead to allergic performance, making the patient’s skin very itchy and small red dots, the patient can take Desloratadine tablets, Stastin hydrochloride tablets, etc. for treatment under the guidance of the doctor, while replacing the quilt; 2, dry skin disease: dry skin disease is a skin disease characterized by dry skin, often occurring in winter and The main symptoms are dry skin, branched flaking, and itching all over the body. Patients should be prohibited from taking hot baths and should take warm baths, not use alkaline soap or body lotion, and apply moisturizing cream after bathing to enhance skin moisturizing and maintenance; 3. Tinea corporis: Tinea corporis is a fungal It is a fungal infection that is usually caused by ringworm infection and is often manifested by the appearance of red spots on the legs with itching, or red spots, papules, and scales attached to the red spots. 4, other aspects: such as urticaria, eczema, bruising dermatitis and other skin diseases, itself has itching, but in the daytime work, study, etc., attention distracted, so the itching is not too obvious, in the quilt attention began to focus on the body surface feeling, when the quilt temperature began to rise, it will cause the release of more inflammatory substances among the skin lesions in the legs, so that patients appear a quilt legs are itchy and The situation of small red spots.