Nose afraid of cold air can be acute rhinitis, allergic rhinitis, vasomotor rhinitis. 1. Acute rhinitis: acute inflammation of the nasal mucosa caused by viral infection, when exposed to cold air, the nasal mucosal stimulation is aggravated, and it is easy to show snot, nasal congestion and other uncomfortable symptoms, such as not secondary to bacterial infections and other complications, the disease is self-limiting, usually about a week to heal itself. 2. Allergic rhinitis: it is a non-infectious disease of the nasal mucosa, which refers to the nasal allergy symptoms caused by atopic individuals after contacting allergens in the cold air, which is greatly influenced by environmental factors, often recurring, and can develop in specific seasons or throughout the year. 3. Vasomotor rhinitis: also known as vasodilatory rhinitis, is a common type of non-allergic rhinitis, when exposed to cold air or irritating odors, it can cause increased secretion of nasal mucosal glands, nerve dysfunction, showing nasal discharge, sneezing and so on. Those who have nasal discomfort are advised to seek medical treatment in time to clarify the diagnosis and standardize the treatment.