Can normal saline relieve the pain at the corner of the mouth caused by pineapple?

Generally, physiological saline can relieve the pain at the corners of the mouth caused by pineapple. The detailed explanation is as follows:

Pineapple contains substantial amounts of organic acids, saponins, and bromelain. Eating it directly can irritate the oral mucosa and the skin on the lips, leading to symptoms such as pain at the corners of the mouth. Rinsing the mouth or applying a wet compress with physiological saline can provide some relief by effectively neutralizing the acidic substances in pineapple and reducing irritation to the oral mucosa. It can also destabilize bromelain, thus reducing its damage to the oral mucosa, inhibiting bacterial growth in the mouth, and helping prevent secondary infections.

Once pain at the corners of the mouth occurs, consumption of pineapple should be stopped immediately to avoid worsening symptoms. Drinking milk may also help, as the proteins in milk can bind with bromelain, reducing its direct irritation to the oral mucosa. If the pain is significant, applying an ice pack or a cold compress to the affected area can be attempted. Cold compresses promote local vasoconstriction, helping to reduce inflammatory responses and pain.

If the pain at the corners of the mouth continues to worsen or other allergic symptoms appear, such as redness, swelling, itching around the mouth or rashes, medical attention should be sought promptly, and anti-allergy medications or other appropriate treatments should be used under the guidance of a physician.