What causes facial swelling after staying up late at night, and what should be done about it?

Facial swelling after staying up late at night may be caused by excessive water intake, slow blood circulation, allergic reactions, or other reasons. It can be improved through general treatments, medications, etc. Specific analyses are as follows:

1. Excessive water intake

If a person drinks a large amount of water before bedtime and urinates less, fluid may accumulate in the body, leading to facial edema. It is recommended that individuals avoid drinking excessive amounts of water before sleeping. Upon waking, applying a warm towel compress to the affected area may help relieve the swelling.

2. Slow blood circulation

Staying up late can lead to insufficient sleep, which over time may impair blood circulation in the body, resulting in fluid accumulation in the face and subsequent swelling. After waking up, drinking an appropriate amount of warm water to promote metabolism, along with maintaining regular sleep habits (going to bed early and rising early), can help improve symptoms.

3. Allergic reaction

If the person only occasionally stays up late, facial swelling is unlikely to result from lack of sleep alone. Instead, it might be due to exposure to allergens such as pollen or dust, triggering an allergic reaction. Under medical guidance, patients may take antihistamines such as loratadine tablets or levocetirizine hydrochloride tablets for treatment.

In addition to the above causes, persistent facial swelling could also be caused by medical conditions such as renal edema or cardiac edema. If facial swelling persists, individuals should seek timely medical evaluation.