Wheals usually reflect localised mast cell degranulation within
the skin. The term 'urticaria' is used to describe this disease
presentation.
Causes include stings, venoms, insect bites, drug reactions, allergic
reactions to foods and environmental allergens, and physical factors
like pressure, cold and exercise.
|
|
Wheal
A circumscribed, raised lesion consisting of dermal oedema.
|
|