Swollen lips often return to normal without treatment, but it's essential to seek immediate medical attention if you experience more severe symptoms, like breathing difficulties or heavy bleeding. Other reasons to see a doctor include if the swelling continues for longer than a few days or if it's accompanied by pain or fever, which may mean your lips are infected.
In less severe cases, you can use home treatments to help the swelling go down. A mild allergic reaction that causes lip swelling is usually over within four days, especially if you use over-the-counter antihistamines. For minor cuts and abrasions inside the mouth, rinse with a peroxyl mouthwash which facilitates healing, alleviates discomfort, and provides a whole mouth clean.
Swollen lips are usually more inconvenient than serious but see a doctor immediately if you have other, more severe symptoms. An allergic reaction can turn life-threatening quickly, and serious swelling can also signify another harmful medical condition. In most cases, icing an injury and keeping the area clean may heal your lips in no time.