Acanthamoeba keratitis is a rare but blinding parasitic eye disease. Experts share how to avoid it and treat it.

Cold weather can sometimes trigger painful swelling of the fingers and toes, known as chilblains or perniosis. Learn what causes it, who is affected, and simple ways to prevent it.

Researchers report that nearly one in five urinary tract infections in Southern California may come from animal-origin E. coli found in retail meat, especially poultry.

A dangerous fungus is spreading across hospitals and nursing homes nationwide, including in New York and New Jersey. Nicolás ...