Swelling in the deeper layers of the skin, known as angioedema, can result from allergic reactions, infections, or autoimmune conditions. It often affects the face, lips, or limbs and may be triggered by certain medications, including antibiotics. Bacterial skin infections like cellulitis are a common cause, where bacteria invade tissue, prompting an immune response. Treatment depends on the cause, and antibiotics are commonly prescribed. For bacterial infections, healthcare providers may recommend cephalexin capsules, an effective oral antibiotic. If you're looking for a cephalexin capsules supplier, ensure they are licensed and provide high-quality pharmaceutical-grade products for safe use.