Quiz: Tongue Discoloration and Other Changes
Question 1 of 3  

The tongue may become discolored for a variety of reasons, some of which are harmless and others more problematic. Which of the following is capable of causing black discoloration on the top of the tongue?

  • A.

    Deficiency of vitamin B12

  • B.

    Ingesting preparations for an upset stomach that contain bismuth 

  • C.

    Iron deficiency anemia

  • D.

    Scarlet fever

Am I correct?