Some swollen lips are caused by allergic reactions, which can be fatal. Seek medical care right away if this has never happened to you before, if your lips are severely swollen, if it affects your breathing, or if your throat swells. If you've had similar allergic reactions in the past and know that these are mild symptoms, take an antihistamine, and keep your inhaler or epinephrine shot nearby.  If the reaction was caused by an insect bite, seek emergency services immediately.  If you're not sure what caused the swelling, take precautions as though it were an allergic reaction. In many cases, the cause of the allergic reaction is never discovered. "Mild" cases can still last several days. Visit a doctor if the swelling hasn't disappeared by then. If your lips also have blisters, cold sores, swollen glands, or flu-like symptoms, you may have a mouth infection, most commonly the herpes simplex virus. Visit a doctor for a diagnosis and prescription antiviral or antibiotic medication. In the meantime, avoid touching your lips, kissing, oral sex, and sharing food, drink, or towels. If you don't know what caused the swelling, see a doctor to find out. This is especially important if it does not reduce within a few days. Here are a few possibilities:  Severe swelling during pregnancy may be a sign of pre-eclampsia. This is a serious condition, so visit the doctor right away. Anti-depressants, hormone treatments, and blood pressure medication may lead to swelling. Heart failure, kidney failure, and liver failure usually lead to more widespread swelling, not just the lip. If the swelling persists after 2 or 3 days, please see a doctor. If the pain suddenly increases, see a doctor.
تصرّف بسرعة في حالة رد الفعل التحسسي. عالج عدوى الفم. خذ موعدًا من طبيبك إذا كنت لا تعلم السبب. تحقق من التورّم والألم كل يوم.