Why does my mouth itch when I eat pineapple?

Generally, mouth itching after eating pineapple may be caused by enzymatic action, food intolerance, oral ulcers, cheilitis, or candidiasis. If in doubt, it is advisable to consult a healthcare professional in advance. Detailed explanations are as follows:

1. Enzymatic Action

Pineapple contains a protein-digesting enzyme called bromelain. When this enzyme comes into contact with the oral mucosa, it may irritate the tissue, causing mild stinging or itching sensations. To reduce this effect, pineapple can be cooked or soaked in salt water before consumption, which helps deactivate bromelain and minimize irritation to the oral mucosa.

2. Food Intolerance

Food intolerance refers to an abnormal immune response or metabolic disorder triggered by specific food components, leading to discomfort after ingestion. Components in pineapple may trigger intolerance reactions in some individuals, manifesting as mouth itching or allergy-like symptoms, possibly accompanied by abdominal discomfort, rashes, or other symptoms. Affected individuals should avoid consuming pineapple and related foods. Testing for food intolerance can help identify the specific triggering components and guide dietary adjustments. Antihistamines such as chlorpheniramine tablets or loratadine tablets may be taken when necessary. In cases of severe allergic reactions, immediate medical attention is required, and epinephrine injection may be needed.

3. Oral Ulcers

Oral ulcers are associated with inflammation and damage to the oral mucosa. The irritants in pineapple may exacerbate this condition, triggering early inflammatory responses that manifest as mouth itching or mild pain. This may progress to small ulcerous lesions on the oral mucosa, accompanied by pain and discomfort.

Under medical guidance, oral ulcer lozenges, Bingbor Powder (Ice Borax Powder), vitamin B2 tablets, or similar treatments may be used to promote healing and relieve pain. Additionally, avoid spicy or irritating foods and maintain good oral hygiene.

4. Cheilitis

Cheilitis is typically related to inflammation and damage of the lip mucosa. The acidity and irritants in pineapple may worsen lip inflammation, causing symptoms such as itching, dryness, and peeling. This may be accompanied by redness, swelling, dryness, flaking, and even cracks or pain on the lips. Moisturizing treatments such as lip balms or lip masks can help. As directed by a physician, anti-inflammatory medications such as erythromycin ointment, dexamethasone cream, or vitamin E capsules may also be used for treatment.

5. Candidiasis (Oral Thrush)

After eating pineapple, poor oral hygiene may allow Candida fungi in the mouth to overgrow, leading to mucosal infection. Symptoms may include mouth itching and white patches, possibly accompanied by dry mouth and bad breath. Maintaining good oral hygiene and regular mouth rinsing are important. If necessary, consult a doctor about using topical antifungal agents such as clotrimazole cream or ketoconazole cream, or oral antifungal medications such as itraconazole capsules or terbinafine hydrochloride tablets.

It is recommended to maintain good oral hygiene daily. Additionally, consider undergoing food intolerance testing at a hospital to identify specific intolerant components and adjust your diet accordingly.