What should I do if my whole body itches when I am hot or sweating?

According to your description, it can be preliminarily diagnosed as cholinergic urticaria, which belongs to urticaria and is also an allergic phenomenon.

1, the main treatment is to avoid contact with allergens, which can be relieved by oral chlorpheniramine, and antiallergic drugs can be used appropriately. Usually pay attention to control emotions and avoid strenuous exercise.

2. Dermatitis tickles more and more, which will cause a vicious circle, so don't scratch it. Cold compress on the skin with a cold towel can shrink the dilated capillaries and reduce the inflammatory reaction.

3, the diet should be as light as possible, do not smoke and drink, avoid spicy, greasy, sweet food, and eat more fruits and vegetables.

4, you can take some vitamins B and C orally, which has an auxiliary therapeutic effect. Vitamin B 1, also known as thiamine, can inhibit cholinesterase activity, reduce skin inflammatory reaction, prevent and treat seborrheic dermatitis and eczema, and improve skin health.