Which condition is swelling of deeper tissues?

• A. Urticaria
• B. Angioedema
• C. Sepsis
• D. Leukotrienes

Answer: (B)

Angioedema involves swelling of deeper tissues, specifically the subcutaneous layers and mucous membranes. This type of edema occurs when fluid leaks into deeper parts of the skin and surrounding tissues, so you often see swelling around the lips, eyelids, tongue, or along the GI tract. It’s different from urticaria, where the swelling is superficial in the dermis and forms the characteristic itchy wheals on the skin. Sepsis is a systemic infection with widespread inflammation, not a localized deep-tissue swelling, and leukotrienes are inflammatory mediators rather than a condition themselves describing tissue depth of swelling.