Sudden red and hot ears are most often associated with altered blood flow. However, if the redness does not go away for a long time or other symptoms appear, the cause may be different.
Why one ear becomes red and hot / © Freepik.
It happens that one ear suddenly begins to "burn" and becomes bright red, although a few minutes ago nothing bothered. Most often, this reaction is quite natural, but sometimes it can indicate irritation, infection, or another problem.
The auricle is covered with thin skin and has a good blood supply. Therefore, any vasodilation quickly becomes noticeable: the ear turns redder and seems hotter.
Such a mechanism can be triggered through quite ordinary things. For example, in heat, the body increases blood flow to the surface of the skin to get rid of excess heat. The same thing happens during physical exertion, when the body temperature rises.
While a person is outside at a low temperature, the body restricts the blood supply to the skin. In a warm room, the vessels dilate again — it is at this point that the ear can turn red, bake or tingle.
If the skin color quickly returns to normal after rest or a change in temperature, and there are no other symptoms, it is the redness that does not necessarily indicate inflammation.
After a burn, the ear may be red, hot, and painful. With a stronger lesion, swelling and blisters are possible, and subsequently the skin may begin to peel off.