WHEALS Meaning and
Definition
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Wheals refer to raised, itchy, and often red or white skin lesions that typically occur as a result of an allergic reaction or during the early stages of certain illnesses. They are most commonly associated with hives (urticaria) but can also be seen in various dermatological conditions.
These skin wheals are typically round or oval-shaped and can vary in size from a few millimeters to several centimeters in diameter. They often appear suddenly and can be quite itchy, causing significant discomfort to the affected individual. Wheals usually resolve within a few hours or days but may reoccur intermittently.
Wheals are caused by the release of histamine and other inflammatory substances in response to the body's immune reaction to an allergen. Common triggers of wheals include certain foods, medications, insect bites, and environmental factors. Whenever an allergen enters the body, it stimulates the release of histamine from immune cells called mast cells. Histamine causes the blood vessels in the skin to dilate, allowing fluid to leak out and form wheals.
Furthermore, wheals can also be symptomatic of underlying medical conditions such as autoimmune disorders, infections, or systemic diseases. Diagnostic evaluation may be necessary to determine the cause of recurrent or prolonged wheals. Treatment for wheals typically involves identifying and avoiding the trigger, along with antihistamines or other medications to relieve itching and reduce inflammation.
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Etymology of WHEALS
The word "wheals" has its origin in the Old English word "hwēol", which meant "wheel". This term is derived from the Proto-Germanic word "hwehwlą". Over time, the meaning of the word shifted, and "wheal" came to refer to a raised, reddish mark on the skin caused by an injury or illness. This change in meaning is believed to have occurred around the 16th century. The word "wheals" is still used in medicine today to describe certain types of skin conditions, such as hives or insect bites.
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