Commonly known as rashes, skin allergy and irritation may be caused when the skin comes in contact with any substance that the body mistakes as an invader. The defense mechanism of our body ie. Immune system overreacts and sends out antibodies(scientifically known as histamines) to help fight off the allergen. The result is a red, itchy rash where the substance was on the skin or in contact with the skin. The symptoms of these rashes are visible only on the affected area.
Such Irritants or allergens differ as per the skin type. The level of effect ranges from moderate to high, depending on the severity of the condition.