I itch when I get hot. What should I do?

In the past, when it was hot, the trunk and scalp itched, and when it sweated, it cooled down or got better.

It is because when the body is excited, a substance called acetylcholine is secreted in the blood. This substance is uncomfortable to the skin and can cause allergies. Generally, it is temporary and will disappear after a certain age. If you feel severe discomfort, you can take some anti-acetylcholine drugs.

Just inject atropine. One yuan a bottle is fine, don't eat it.