Why does my body itch when I sweat

Sweating is a condition that everyone can show. However, some people itch when they sweat, and may also show red spots, wheals, etc., which is related to the composition of sweat. Human sweat is a product of metabolism, with a lot of salt and other substances, as well as local bacteria. The reproduction of possible skin irritation, causing allergic reactions, causing itching. And sweating causes a humid and hot environment for local skin, which is very suitable for the growth and reproduction of fungi, especially when the clothing permeability is poor and the sweat is not absorbed, the local skin is likely to show fungal infection, showing sweat spots, etc. This is also one of the main reasons for itchy skin. Here, sweat spots are small round spots centered on pores. The color is white. Similar plaques may merge together. At the beginning, they are light pink. Over time, they will show pigmentation. The distribution may be in the trunk, back, waist, etc. Therefore, maintaining the permeability of the clothing texture and keeping the skin dry is one of the ways to reduce this skin itching. Of course, if you show the performance of fungal infection, you should go to a regular hospital for treatment. Another cause of itching after sweating is called cholinergic urticaria. When heat or mental stress causes an increase in body temperature or sweating after exercise, the increased blood flow will stimulate the brain's thermoregulatory center to excite, producing cholinergic nerves to release acetylcholine, and then acetylcholine This substance causes allergic symptoms called cholinergic cystic urticaria. Most common in adolescence, this symptom can subside when exercise stops or calms down, or when the body temperature drops.