Swollen upper lip: causes, care, and warning signs

An upper lip may enlarge after accidental biting, impact, sun exposure, a new cosmetic, food contact, or an insect bite. A sore tooth or infected gum can create swelling near the lip, often with tenderness or pain. Tingling and blisters suggest a different pattern from smooth, deeper swelling. Angioedema is a condition involving deeper tissue swelling and can affect the lips, sometimes alongside hives; read about [Angioedema](/conditions/angioedema/). A photograph, symptom timeline, and review of recent exposures can help distinguish these patterns.

Remove possible irritants such as a new balm, lipstick, toothpaste, or mouthwash, and rinse gently if residue remains. Place a cool compress over the lip with a cloth barrier. Rest with your head slightly raised and avoid rubbing, heat, alcohol-based products, or foods that cause stinging. Do not pierce, squeeze, or apply prescription creams without guidance. Keep track of medicines, meals, dental visits, bites, and injuries from before the swelling began. A healthcare professional can advise whether an antihistamine or another treatment is appropriate for you.

Call emergency services for tongue or throat swelling, shortness of breath, wheezing, difficulty swallowing, drooling, voice change, severe dizziness, or collapse. Seek same-day assessment for rapidly increasing swelling, widespread hives, fever, spreading redness, pus, or significant tooth pain. Arrange a routine appointment if the swelling does not improve, returns repeatedly, or occurs with an unexplained lump, persistent ulcer, or numbness.

Ask what findings point to irritation, allergy-type swelling, infection, or a dental cause; whether your medicines could contribute; which products to avoid; and exactly when to use emergency services.