Yes and also red rash related to dry skin ; blood vessels and scorisis appear.
Pressure decreases
Boiling. A liquid boils at a temperature at which its vapor pressure is equal to the pressure of the gas above it.
It's called my "ankles".
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You aren't at water level.
Air pressure is simply the weight of the air above you. Air pressure falls with height because the higher you go up, the less air there is above you to weigh down on you.
The air is thinner the higher you go.
The air is thinner the higher you go.
The most likely causes are either that your shoes are too tight, or the friction between your shoes and your ankles are causing irritation.
If you increase the atmospheric pressure, the pressure will also increase. This is because atmospheric pressure is the pressure exerted by the weight of air above a certain point, so increasing the amount of air causes an increase in pressure.
As altitude above seal level increases, atmospheric pressure decreases.
As you move from the base to the top of a mountain, the air pressure decreases. This is because the weight of the air above decreases with elevation. At higher altitudes, there are fewer air molecules above, resulting in lower pressure.