Can food allergies cause itchy skin?

Food allergies can indeed cause skin itching, which is one of the common skin manifestations of an allergic reaction. When the body ingests a certain specific food, if the immune system mistakenly identifies it as a harmful substance, it triggers a defense mechanism, releasing chemical substances such as histamine to combat the "invader." These chemicals can affect the skin, potentially causing blood vessel dilation, increased permeability, and resulting in skin itching, redness and swelling, hives (wheals), or eczema-like rashes. Therefore, individuals with known or suspected food allergies should immediately stop consuming the food upon experiencing symptoms such as skin itching, monitor changes in symptoms carefully, and seek medical assistance when necessary. The key to preventing food allergies lies in identifying personal allergens and avoiding contact with them in daily life.