- A) Prolonged antibiotic use
- B) Sjögren's syndrome
- C) Addison's disease
- D) Chronic gastroesophageal reflux
- E) Malignant melanoma
The answer is A.
(Black tongue) Black hairy tongue results from hyperplasia of the filiform papillae with deposition of keratin on the surface. The condition causes the tongue to have ..............