Itchy and swollen toes in winter may be caused by frostbite, tinea pedis, etc., and you should consult a doctor in time to find out the cause. 1. Frostbite: Frostbite is an inflammatory skin disease induced by cold stimulation, mostly occurring in the terminal parts of the skin, such as toes, instep, fingers, back of the hand, tip of the nose and auricle. Due to the cold stimulation leads to the local appearance of purplish red edematous plaques, some patients have burning or itching sensation. 2. Tinea pedis: fungal infections of the foot skin can cause tinea pedis, which can appear as symptoms of peeling of toe seams, redness, swelling and itching of toes. However, other factors can not be ruled out, it is recommended to consult a doctor in a timely manner, by the doctor to clarify the cause of the disease, give targeted treatment.