How to treat a swollen lip

A lip can swell after biting, a blow, irritation from a product, a dental problem, infection, or an allergic-type reaction. A local injury often causes tenderness at one spot, while a reaction may develop quickly and affect more than the original area. Look at the timing, whether one or both lips are involved, and whether there are hives, mouth sores, fever, tooth pain, or discharge. These details help a clinician choose appropriate care; using someone else's prescription can obscure the cause or irritate the tissue further.

For a recent minor injury, use a cold pack wrapped in cloth on the outside of the lip for short intervals. Keep the area clean, avoid biting or rubbing it, and choose cool, soft foods. Stop a new lip balm, cosmetic, toothpaste, or food if it seems linked to the swelling. Do not apply ice directly, squeeze a lump, or use antibiotic or steroid cream inside the mouth unless prescribed. A pharmacist or clinician can advise on suitable pain relief after checking your health and medicines.

Call emergency services for swelling of the tongue or throat, wheezing, a tight throat, trouble breathing or swallowing, widespread hives, or faintness. Seek prompt review for fever, pus, spreading redness, a deep cut, persistent bleeding, severe pain, a dental abscess concern, or swelling that keeps increasing. Sudden swelling without an obvious injury can be a sign of angioedema and should not be managed by trial and error at home.

Ask what cause is most consistent with the timing and pattern, whether you should stop a product or medicine, and which treatment is safe with your medical history. Bring a list of recent foods, products, medicines, and exposures.