Johnson P. Hood

Itchy skin, this is reliable

Due to the complex causes of itching, the current medical understanding of the physiology and pathology of itching is superficial, so that we have all kinds of "pain-relieving tablets" and "pain-relieving tablets", but there are no "anti-itching tablets" and "pain-relieving tablets". Itching tablets". The current antihistamines, that is, the familiar anti-allergic drugs such as chlorpheniramine and astemizole, can prevent the irritation of histamine on the skin, and therefore have a certain antipruritic effect, especially for allergies such as urticaria. For skin diseases, the effect of antipruritic is more obvious. But in fact, the cause of itching is not only histamine, but also other inflammatory mediators. Many medical diseases, tumors, and neurological abnormalities can all cause itching. Therefore, for itching caused by other diseases, anti-allergic drugs have less obvious anti-itching effect. Therefore, antihistamines cannot be taken as antipruritic drugs.