Itchy legs, the more you scratch the more itchy can be seen in dermatitis such as atopic dermatitis, as well as eczema, pruritus and so on. 1.Allergic dermatitis: metamorphic inflammatory reaction after contacting or ingesting allergic substances, which may lead to the manifestation of itchy legs. 2. Eczema: It can occur on the face, feet, calves and other parts of the body, with itchy red spots, pimples and even blisters, and the lesions can be aggravated by scratching. 3. Pruritus: Itchy skin first appears under the condition of clothing stimulation, dry environment, etc., but there is no primary skin lesion manifestation, the degree of itchiness is variable, and when itching is severe, it is caused by scratching which results in skin scabs and scratches, etc. The more you scratch, the more itchy your legs become. The more you scratch the more itchy skin on your legs, the more itchy you need to consult a doctor in time, the cause of the symptomatic treatment, and avoid scratching to prevent the aggravation of skin lesions.