Red spots on the body in spring, accompanied by itching, may be related to contact dermatitis, urticaria and eczema and other diseases. 1. Contact dermatitis: an allergic reaction caused by contact with allergens, the most common allergen in spring is pollen, clinically manifested mainly in the face, neck and other exposed parts of the skin appearing erythema, pimples, accompanied by varying degrees of itch. 2. Urticaria: due to the body after ingestion or inhalation of allergens, resulting in skin vasodilatation, increased vascular permeability, with the main manifestation of air masses, in the physical examination there will be obvious skin scratch sign positive. 3. Eczema: It is a chronic inflammatory skin disease caused by internal and external factors, the external factors include allergens in the environment or food, and the internal factors include genetic factors, immune factors and so on. Typical manifestations of eczema are erythema, papules, pimples, etc., accompanied by itching and easy to recur. Due to the relatively more complex etiology, the possible diseases are different. It is recommended that patients with red spots with itching in the spring go to a regular hospital for a clear diagnosis, and standardize the use of medication under the guidance of the doctor.