Frostbite refers to the freezing of body tissue (usually skin) that results when the blood vessels contract, reducing blood flow and oxygen to the affected body parts. Normal sensation is lost, and ...

Frostbite is a type of injury that can occur when your skin’s exposed to the cold. Cold exposure can cause the top layer of your skin and some of the tissues beneath it to freeze. Frostbite is most ...

If you've been exposed to extra cold temperatures without proper precautions, it's possible that you could develop frostbite. You're most likely to develop frostbite in your extremities — like your ...

An ulcer occurs when tissue in an area of the mouth, stomach, esophagus, or other part of the digestive system becomes damaged. The area gets irritated and inflamed, and creates a hole or sore. Ulcers ...