When the filiform papillae on the tongue are absent, the condition is known as ____________.

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The filiform papillae are the small bumps on the tongue that give it its rough texture, and when they are absent, the tongue appears smooth and shiny. This condition is known as glossitis, and it can be caused by a variety of factors including infections, nutritional deficiencies, and autoimmune disorders. Geographic tongue refers to a condition where the tongue has irregular, patchy areas of missing papillae, while a fissured tongue has deep grooves or cracks on its surface. Hairy tongue is a condition where the papillae grow longer than usual, giving the tongue a "hairy" appearance.

When the Filiform Papillae on the Tongue Are Absent, the Condition