Before the coronavirus outbreak, Dr. Lindy Fox, a dermatologist in San Francisco, used to see four or five patients a year with chilblains — painful red or purple lesions that typically emerge on ...

Swollen ankles and feet due to edema, or fluid build-up, can be caused by minor or major conditions, such as injury, pregnancy, standing or sitting for a long time, heart disease, or liver failure.

Chilblains, painful itchy swellings, occur when cold air causes blood vessels to constrict and then rapidly dilate upon rewarming. This inflammation affects extremities, particularly in damp, chilly ...