Swelling in the ankles and feet is common after you have been sitting
or standing for long periods of time (positional swelling).
Long airplane flights or automobile rides are common causes of lower
leg swelling. You have an increased risk of positional swelling if you have a
job (such as being a surgical technician, assembly line worker, or teacher)
that requires you to stand for long periods of time.
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 color changes also occur in these tissues.
Frostbite is most likely to affect body parts that are farther away from the body core and, therefore, have less blood flow. These include your feet, toes, hands, fingers, nose, and ears.
There are three degrees of cold injury: frostnip, superficial frostbite,...