Final Answer:
A wheal is a raised, palpable, solid lesion. Therefore, the correct option is A. A raised, palpable, solid lesion.
Step-by-step explanation:
A wheal refers to a raised, palpable, solid lesion on the skin. It's typically characterized by its transient nature, appearing quickly due to fluid accumulation in the dermis. Wheals are commonly associated with allergic reactions, insect bites, or hives (urticaria). They appear as slightly elevated, reddish or pale swellings on the skin, often accompanied by itching or discomfort.
These lesions are usually temporary and may vary in size and shape. They are caused by localized edema resulting from the release of histamine and other chemical mediators in response to triggers like allergens or irritation. Wheals can be solitary or clustered, and they tend to resolve within hours to days, often without leaving any lasting marks on the skin.
Clinical examination of wheals involves assessing their size, shape, color, and the presence of associated symptoms like itching or pain. Management often includes identifying and avoiding triggers, symptomatic relief using antihistamines or corticosteroids, and addressing underlying conditions if necessary. Understanding the characteristics of wheals aids healthcare professionals in diagnosing and managing various skin conditions effectively. Therefore, the correct option is A. A raised, palpable, solid lesion.