Itchy Palate (Roof of Mouth): Causes, Treatments & When to See a Doctor

Common Causes & Targeted Treatments

Cause	Mechanism	Treatment
Oral Allergy Syndrome (Pollen-Food)	Cross-reactivity: birch pollen → apple, carrot, hazelnut, etc.	Avoid trigger foods (raw); cook to denature proteins; antihistamines.
Food Allergy (IgE-mediated)	True allergy: nuts, shellfish, dairy, etc.	Strict avoidance; epinephrine auto-injector if anaphylaxis risk.
Fungal Infection (Oral Thrush)	Candida overgrowth; white plaques, burning.	Topical antifungals (nystatin, clotrimazole); systemic if severe.
Dry Mouth (Xerostomia)	Meds, Sjögren's, radiation, mouth breathing.	Hydration, saliva substitutes, humidifier, pilocarpine/cevimeline.
Nutritional Deficiency	B12, iron, folate, zinc deficiency → glossitis, angular cheilitis.	Supplementation + dietary correction; treat underlying cause.
Lichen Planus (Oral)	Autoimmune; white reticulations, erosions, pain.	Topical steroids (fluocinonide), tacrolimus; systemic if severe.
Contact Allergy	Toothpaste (SLS, flavorings), dental materials, mouthwash.	Switch to SLS-free, unflavored products; patch testing.
Viral (HSV, Coxsackie)	Vesicles → ulcers; herpangina, herpetic stomatitis.	Supportive; antivirals (acyclovir) if severe/immunocompromised.

Red Flags – See a Clinician

• Persistent >2 weeks.
• Ulcers, bleeding, swelling, difficulty swallowing.
• Systemic symptoms (fever, weight loss, rash).
• Immunocompromised.

Diagnosis: history, exam, possibly swab, biopsy, blood work. Treat the cause, not just the itch.