So-called cold urticaria is the most common type of physical urticaria, which can be seen at any age and is both familial and acquired. Familial cold urticaria is an autosomal dominant condition that develops at birth or early in life and can persist throughout life. Acquired cold urticaria, which is most common in young women, is characterized by pruritic edema and wind clumps in the cold area after contact with cold water or other cold substances, which can disappear in about half an hour to an hour. It mostly occurs on exposed areas of the face, such as the face, hands, and even the feet. When cold urticaria occurs, you should first get rid of the allergen and avoid cold stimulation, and you can apply antihistamines, calcium supplements and steroid hormones, etc. You can apply localized glycolic lotion.