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Swelling in the deeper layers of the skin, often referred to as angioedema, can result from allergic reactions, infections, or side effects of certain medications. It occurs when blood vessels leak fluid into surrounding tissues, causing puffiness and discomfort. Common triggers include food allergens, insect stings, or bacterial infections. Infections such as cellulitis may require antibiotic treatment, and healthcare providers might prescribe options from cephalexin capsules distributors to manage bacterial causes. Prompt medical evaluation is essential to prevent complications, especially when swelling affects the face, lips, or airway, as it may interfere with breathing and require urgent intervention.