Red patches on the skin can occur due to a number of reasons. It could occur due to an infection, heat, allergens or immune system disorders. This article contains the possible causes of red patches on your skin and different treatment options you could use to get rid of the skin condition., Red spots on the skin can appear for a variety of reasons, ranging from harmless to potentially serious conditions. They can be caused by simple irritants like dermatitis, infections such as ringworm, or even tiny bursts of blood vessels known as purpura., What it looks like: Also called urticaria, hives are raised welts in the skin that appear red or discolored. They range in size from small bumps to larger patches., Red spots on the skin that are not itchy can be due to various conditions such as petechiae, infantile hemangioma, keratosis pilaris, acne, cherry angiomas, pyogenic granuloma, granuloma annulare, lupus, Lyme disease, hand foot and mouth disease, erythema nodosum, syphilis, leprosy, or skin cancer., Dermatitis, or eczema, refers to a group of inflammatory skin conditions. These conditions typically cause red, itchy patches of skin where inflammation has happened. Some common types of, Skin rashes can be red, inflamed, bumpy as well as dry, itchy or painful. The main cause is dermatitis, which is when your skin reacts to allergens or irritants. Bacteria, viruses, allergens and conditions including eczema, hives, and psoriasis can be the source of skin rashes..