What Causes Sudden Swelling of the Lips?
Jul 05, 2021
Source: Cainiu Health
Dr. Liu Wan
Introduction
Sudden lip swelling may be caused by trauma, “excess internal heat” (a traditional Chinese medicine concept), allergic reactions, or other factors. In most cases, sudden lip swelling is attributed to “excess internal heat.” This condition is most commonly observed in individuals who frequently consume spicy foods—particularly after ingesting large quantities of foods seasoned with pepper and chili peppers, especially when accompanied by inadequate fluid intake.
Sudden swelling of the lips may be caused by trauma, excessive internal heat (“fire”), allergic reactions, or other factors. Patients are advised to seek medical attention at a hospital as soon as possible for appropriate evaluation and prompt treatment.
1. Trauma
Following impact or injury to the mouth, localized soft-tissue contusion may result in sudden lip swelling, often accompanied by pain. Within the first 24 hours, apply cold compresses to alleviate pain and reduce swelling; after 24 hours, switch to warm compresses to promote absorption of exudate. Additionally, patients may take blood-activating and stasis-resolving medications—such as Sanqi tablets—as prescribed by a physician.
2. Excessive Internal Heat (“Fire”)
In most cases, sudden lip swelling is attributable to excessive internal heat. This condition is especially common among individuals who frequently consume spicy foods. It may occur after ingesting large amounts of foods seasoned with pepper or chili peppers, particularly when combined with insufficient fluid intake.
3. Allergic Reaction
If the lips are stung or bitten by an insect, a localized allergic reaction may develop, manifesting as lip swelling, itching, or ulceration. In such cases, immediate hospital evaluation is essential. Under medical supervision, antihistamines should be administered systemically; topically, calamine lotion may be applied. For severe pain, analgesics may be used appropriately.
In addition to the above causes, cheilitis (inflammation of the lips) may also produce similar symptoms.
