An itchy tongue can be caused by several factors, most commonly allergies or infections.
Common Causes of an Itchy Tongue
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Allergies: Oral allergy syndrome (also known as pollen-food syndrome) is a frequent cause. This occurs when your immune system reacts to proteins in certain foods that are similar to allergens like pollen. This cross-reaction leads to itching and inflammation in the mouth, including the tongue. Common culprits include fruits, vegetables, and nuts. [Source: Curist, Liberty Village Dental Care, Healthline, Teeth Talk Girl, Tindale Dental]
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Infections: Viral or fungal infections, such as thrush (a yeast infection), can also cause an itchy tongue. [Source: Healthline, Teeth Talk Girl, Liberty Village Dental Care, Dr. Amarnathans Dental Care, Medical News Today]
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Other Irritants: Reactions to medications, latex, or other substances can irritate the tongue and cause itching. [Source: Healthline]
Less Common Causes
While less frequent, other potential causes include:
- Dry Mouth: Dehydration can lead to a dry, itchy tongue.
- Physical Irritation: Biting or scraping the tongue can cause irritation and itching. [Source: NHS]
Symptoms and When to See a Doctor
If you experience an itchy tongue along with other symptoms like swelling, difficulty swallowing, or white patches on your tongue, consult a doctor immediately. These could indicate a more serious condition. [Source: NHS, Mayo Clinic]
