When it's hot, I get red pimples. What happened?
Mr. Liu often has urticaria, but he didn't eat sensitized food before and after the onset, and he had "hot" symptoms when he broke out in a rash. Sometimes it's sweating after exercise, sometimes it's hot, and sometimes it's after a hot bath. Is he allergic to heat?
Urticaria is a common allergic disease, which mostly occurs in spring, summer and autumn.
Pathologically, urticaria is peripheral telangiectasia, so it is closely related to the "heat" of body temperature rise. If you sweat all over, take a hot bath and get too excited, you will have an allergic reaction. This kind of urticaria is also called cholinergic urticaria. In addition to the above reasons, factors such as drinking and eating spicy food may also be induced. Its symptoms are consistent with those of common urticaria, that is, wheal with itching appears on the skin and will subside on its own.
Urticaria is an allergic disease, so contact with allergens should be stopped in time. For patients with hot urticaria, it is necessary to avoid rising body temperature as much as possible. Taking antiallergic drugs, that is, antihistamines, combined with vitamin C can increase immunity; In case of severe allergy and itchy skin, it can be combined with topical liniment and mild skin protectant, such as calamine lotion; If the skin is damaged by aggressive exudate, 3% boric acid solution should be used for wet compress.
How to prevent this urticaria?
Urticaria caused by heat is also a manifestation of low resistance. Prevention should focus on exercising and strengthening physical fitness, otherwise the resistance will be too poor and the types of allergens will increase. In addition to clear allergens in food, we should also avoid alcohol, strong tea, coffee and spicy food; Always clean bedding, pillows, etc. Minimize contact with allergens such as dust mites and pollen in the environment; Use bath products and cosmetics with less essence; Pay attention to the temperature change, avoid skin irritation caused by too cold and too hot, and avoid long-term sun exposure; Keep exercising properly, keep a good attitude, and try not to get too excited and suddenly excited.
The drugs mentioned in this article should be used under the guidance of a professional doctor. )