Whenever the hot weather comes, my skin becomes itchy when I get hot. Why is this?

This phenomenon may occur due to being exposed to the hot sun for too long, taking a hot bath for too long, or being nervous or angry. Seasonal changes in skin allergies: Due to various environmental factors, allergenic substances such as bacterial spores and pollen scattered in the air will release a large amount of histamine, a compound that is found in almost all tissues of the human body, causing facial skin allergies. Temperature changes: the temperature changes from cold to hot. , causing sensitive people's faces to become red and hot. Ultraviolet rays cause facial skin irritation. Facial skin allergies cause some women to experience itching, rashes and scales, peeling, dryness, itching, and erythema all over the body. Allergies such as facial redness and whiteness, mottled appearance, etc. In severe cases, allergic facial redness may even occur. In terms of diet, pay attention to nutritional balance. You can eat more milk, freshwater fish, soy products, fresh vegetables and fruits to enhance skin resistance. Avoid eating saltwater fish, shrimp, crab and other allergenic foods. Do not touch or rub the affected area with your hands frequently, as this is very dangerous.