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Facial edema or facial swelling is not serious unless accompanied by a medical condition like anaphylaxis. People suffering from facial edema due to anaphylaxis can develop a severe allergic reaction in minutes or seconds. If the facial edema lasts for more than a day, the following complications arise:
- Respiratory difficulties due to anaphylactic shock.
- Hypotension or low blood pressure.
- Dizziness.
- Skin reactions, including rashes and hives.
- Nausea, vomiting, and diarrhea.
