Wheals
Wheals
Wheals (pronunciation: /wiːlz/) are a type of skin reaction, characterized by raised, itchy, and often red bumps on the skin. They are typically associated with allergic reactions and other forms of hypersensitivity.
Etymology
The term 'wheal' is derived from the Old English 'hweol', which means 'wheel' or 'circle'. This is likely a reference to the round or oval shape that wheals often take.
Symptoms and Causes
Wheals are often itchy and can vary in size, from a few millimeters to several centimeters in diameter. They are typically red or pink and have a pale center. Wheals can be caused by a variety of factors, including allergens, physical stimuli such as heat or pressure, and certain medical conditions such as urticaria or angioedema.
Related Terms
- Allergen: A substance that causes an allergic reaction.
- Hypersensitivity: An exaggerated or inappropriate immune response.
- Urticaria: A condition characterized by the development of wheals, also known as hives.
- Angioedema: A condition similar to urticaria, but the swelling occurs beneath the skin instead of on the surface.
Treatment
Treatment for wheals typically involves identifying and avoiding the triggering factor, if possible. Medications such as antihistamines can also be used to help reduce itching and inflammation.
External links
- Medical encyclopedia article on Wheals
- Wikipedia's article - Wheals
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