Rashes are unusual changes in skin color or texture. They normally come from skin inflammation, which can have different causes. There are many types of rashes, including those caused by skin. The 10 most common skin rashes are contact dermatitis, heat rash, fungal rash (ringworm/tinea), allergic hives, viral exanthems, eczema, psoriasis, rosacea, drug rashes, and stress-related hives. From eczema to allergic reactions to bug bites, here’s what common skin rashes look like in photos, and the symptoms that can help you I.D. the condition. A rash is any area of irritated or swollen skin. Rashes may be itchy and painful and appear differently on different skin tones. In some cases, a rash may be a sign of a medical emergency. 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. Although most rashes clear up fairly quickly, others are long-lasting and need long-term treatment. Because rashes can be caused by many different things, it's important to figure out what kind you have before you treat it. A rash is an area of skin that is irritated, inflamed or swollen. Rashes can occur due to various causes. Discover 36 common skin rashes. Some rashes and related skin conditions need emergency or specialist care instead of urgent care. If your symptoms include a high fever, widespread blisters, facial swelling, or a rash in the eyes, mouth, or genitals, head to the emergency room or contact your primary care provider right away. Contact with the oily coating from poison ivy, oak, or sumac causes a rash in many people. It begins with redness and swelling at the site, and then becomes itchy. Rashes can happen for many reasons, including skin infections, allergies, and medications. They can also result from bacterial, fungal, viral, or parasitic infections and other diseases. In this.