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Geographic tongue is a harmless but sometimes uncomfortable condition that affects the surface of the tongue. It causes irregular patches that look smooth, red, and slightly raised around the edges, giving the tongue a map-like appearance. While the look can be concerning, the condition is not contagious, cancerous, or linked to infection. Some people experience no discomfort at all, while others notice irritation when eating certain foods such as spicy dishes, acidic fruits, or very hot or cold items.


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