What should you know about top lip swollen overnight?

A reaction may begin after a late meal, medicine, lip product, toothpaste or contact with bedding or a household substance. A bite or pressure during sleep can cause local swelling. Pain, warmth, crusting, fever or a tender tooth points more toward infection, inflammation or a dental source. Sudden deeper swelling of the lips can occur with angioedema and may appear without an obvious rash.

Check whether the tongue, eyelids or throat are also swollen and whether the change is spreading. Record recent foods, medicines, products, dental work and any prior episodes. These details help a clinician distinguish a local problem from a body-wide reaction.

Remove any new lip product, rinse the mouth with water if an irritant may be involved, and use a cool compress on intact skin. Avoid squeezing the lip or applying leftover prescription medicine. Contact a healthcare professional today if the swelling is unexplained, painful, recurrent or not improving. Angioedema is one possible cause and has specific warning signs.

Seek emergency help now for tongue or throat swelling, difficulty breathing or swallowing, a hoarse voice, widespread hives, dizziness or faintness. Seek urgent same-day care for rapidly enlarging swelling, fever, severe pain, pus, spreading redness or a suspected dental infection. Airway symptoms take priority over finding the trigger.

Be ready to share when you first noticed the swelling, whether it changed during the night, new foods or medicines, products used before sleep, possible bites, dental symptoms, hives, itching and any breathing or throat change.