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During an angioedema attack, act swiftly: 1. Take prescribed antihistamines or corticosteroids immediately to reduce swelling. 2. If breathing is difficult, use an epinephrine auto-injector if prescribed, and call 911. 3. Apply a cool compress to the affected area to ease discomfort. 4. Avoid triggers like certain medications or allergens. 5. Stay calm to prevent worsening symptoms. For those managing chronic conditions, consult a reliable cephalexin supplier for consistent medication access, as infections can exacerbate symptoms. Always keep emergency contacts handy and inform family about your condition. Regular check-ups with an allergist can help prevent future attacks.