The cold can cause an allergic reaction, which in some cases is dangerous. The Russian doctor Yekaterina Gergesova told about this to the "Reedus" edition.
The first signs of allergy include hives - a red itchy rash on a frozen area of skin, a burning sensation when the area is heated, swelling, fever, and headache. In some cases, due to a sharp increase in the sensitivity of the body, anaphylaxis may occur in a person with repeated cooling. It is manifested by sharp pain, severe swelling, and a sharp drop in blood pressure.
“This condition can lead to difficulty breathing due to swelling of the mouth and larynx. The risk of death in case of anaphylaxis is up to 10-20 percent,”Gergesova explained.
An allergic reaction can be provoked, including going outside in unsuitable clothing, swimming in ice-cold water, or being in a room with a low temperature. Typically, this happens if the temperature drops below 4 degrees, the medic said. Sometimes symptoms appear after two to five minutes and disappear after an hour or two. However, it happens that the reaction can manifest itself within a few hours or even days and last up to two days.
Among the causes of allergy to cold, Gergesova named heredity - in this case, the risk of its development is higher. However, more often the reaction can be provoked by hepatitis and other viral infections, problems with the gastrointestinal tract, thyroid gland. The best way to prevent allergies is to avoid cold temperatures, stay home if you feel unwell on freezing days, and choose the right clothes.