Itchy skin, known as pruritus, is caused by the abnormal functioning of the nervous system. It can be triggered by an allergic reaction to something you are exposed to or bacteria that has invaded your body. Sweating may also trigger itching in some people because it increases blood flow and produces more sweat than usual. When this happens, there is a greater chance for bacterial infections or skin irritation to occur on your skin surface due to the increased number of sweat glands present throughout your skin.. How do I know if my sweating itch?
Skin problems like hives (urticaria) and eczema (atopic dermatitis) also commonly cause itching; these conditions are often difficult for doctors to diagnose correctly because they can overlap with other medical problems related with allergies .