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A skin rash has many characteristics. It makes the skin red, dry, inflamed, itchy, scaly, etc. A skin rash may also cause swelling of the skin. Some of the rashes appear as swelling on the skin. When the rash erupts, the skin swells and then disappears after some time. An example of a rash that causes swelling is a nettle rash. Nettle rash is also known as urticaria. It appears as red itchy swellings on the skin and looks similar to those which result from the contact with a stinging nettle. The rash could differ in size and shape from one person to another. The intensity of itching may also differ. The rash subsides within a day. Nettle rash is also known as urticaria. It appears as red itchy weals or swellings in the skin similar to those resulting from a contact with a stinging nettle. The rash may vary in size and shape from person to person. The intensity of itching may also vary. It resolves within 24 hours. However, it may occur repeatedly or just erupt once. The cause of nettle rash is unknown but it is observe that it mostly occurs due to some allergic reaction. The rash starts as an itchy patch on the skin after sometime weals develop in the surrounding area along with blisters of varying sizes. The rash resolves after two to three hours only to reappear in a different place. There are three types of nettle rash, acute nettle rash, chronic nettle rash and hereditary angioneurotic oedema. A nettle rash can easily be diagnosed. Antihistamines are most commonly used in order to treat nettle rash. They help relieve itching, reduce symptoms and make the rash disappear.
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