<unk>  syndrome (BHT) is a condition of the<unk>  in which the small bumps on the<unk>  elongate with<unk>  or brown discoloration, giving a<unk>  and<unk>  appearance. The appearance may be alarming, but it is a harmless condition. Predisposing factors include smoking, xerostomia (dry mouth), soft diet, poor oral hygiene and certain medications. Management is facilitated by improving oral hygiene, especially scraping or brushing the<unk> .
Black hairy tongue
Crenated tongue
Fissured tongue
Caviar tongue
Omphalolith
Perryville Tree engravings
Macrodontia 
Chattering teeth