A “chilblain” is a painful, swollen area on the skin that occurs as a reaction to cold temperatures. It typically affects the fingers, toes, ears, or nose and can appear as red or purple lesions. Chilblains are caused by the sudden warming of cold skin and can lead to itching, discomfort, and sometimes blisters or sores. They are often associated with poor circulation and can be exacerbated by damp conditions.
