Images in Clinical Medicine from The New England Journal of Medicine — Black Hairy Tongue. Hairy tongue, Black hairy tongue, Black tongue, Melanoglossia, Coated tongue, Hypertrophy of tongue papillae, Lingua villosa nigra. Authoritative facts from. Some images just can't be unseen. The doctors suspected that the minocycline was causing the "black hairy tongue", which is a medical term. Find out more about what causes hairy tongue, how to treat it, and how to prevent it. An example of this is black hairy tongue, which is associated with the consumption of tobacco, coffee, tea, or use of Pictures. Photos of third degree burns.