Runny nose and itchy skin, consider the emergence of allergies, eczema and so on. 1. Allergy: If the patient is allergic, some allergic reactions will occur after contacting allergens, which will lead to the attack of allergic rhinitis, sneezing, runny nose, itchy nose, and many patients will have skin allergy symptoms at the same time, such as pimples, itching, redness and swelling. 2. Eczema: It is an inflammation of the skin caused by a variety of internal and external factors, which can be aggravated by external factors such as food and inhalation of dust. Eczema usually manifests as red spots, papules and blisters with intense itching. If the patient suffers from allergic rhinitis due to contact with allergens, which at the same time induces or aggravates eczema, the symptoms of runny nose and itchy skin may also occur. Symptoms of runny nose and itchy skin should go to the regular hospital in time for examination, to clarify the cause of the disease and symptomatic treatment.