The human body often produces astonishing disorders, and black tongue is an abnormality that may scare you. It may be caused by the benevolent proliferation of the papillae of the tongue (also known as taste buds) or appears as a side effect of certain medications or strong smoking.
Poor blood oxygen levels may be responsible for the black or purple color, but the lack of oral hygiene may also play a part in the problem, as these fungal and bacterial infections found on taste buds give a dark coloration to the tongue.
It is true that black tongue is a rare problem, but in principle it can affect anyone.
Dr. Yasir Hamad, assistant professor at the Washington University School of Medicine in St. Louis, published the case of a 55-year-old woman suffering from black language in the New England Journal of Medicine, reporting that she had taken an antibiotic called minocyline for a week, and started complaining to her doctor about being nauseous and her tongue turning black.
The good news is that can be cured, so when the doctor changed the woman’s medicine, her tongue turned back to its original color.