Cold weather fingers red, swollen and itchy may be frostbite, contact dermatitis, cold urticaria and other causes. 1. Frostbite: cold-induced inflammatory damage to the skin with limited bruising, patients will have itchy hands and feet, redness, swelling, blisters and other symptoms, which can be more with the warm weather and self-healing, but easy to recur, first of all, we need to pay attention to warmth, and at the same time, can follow the doctor’s instructions for local application of vitamin E ointment for treatment. 2. contact dermatitis: part of the population in contact with allergens will also appear after contact with parts of the hand such as redness, swelling, itching, burning and other symptoms, you can follow the doctor’s instructions for local use of glucocorticoid cream, such as mometasone furoate cream. 3. Cold urticaria: the skin in the cold object when the redness, itching, wind masses and angioedema, need to pay attention to warmth, can follow the doctor’s instructions oral loratadine, ebastine and other antihistamines for treatment. If there is cold weather finger redness, swelling and itching, it is recommended to go to the hospital in time to find out the cause of the disease, under the guidance of the doctor to use medication.