1.What is the cause of median rhomboid glossitis?
2.A soft, smooth, blue nodular lesion located on the side of the tongue that fades when pressed is most likely which of the following?
3.What is the term for the acquired, symmetrical darkening of sun-exposed areas on the face and neck, commonly linked to pregnancy and oral contraceptive use?
4.Pink disease is caused by the poisoning of which substance?
5.Which condition is commonly associated with the presence of café-au-lait spots on the skin?
6.Which condition is associated with greenish discoloration of the teeth?
7.What type of oral lesions are typically observed in Peutz-Jeghers syndrome?
8.Which condition is characterized by brownish skin pigmentation while maintaining normal laboratory test results?
9.What is the primary cause of green discoloration commonly seen in children's teeth?
10.Which condition is known to cause an increase in oral melanin pigmentation?
11.Which site within the oral cavity is the most frequent location for pigmented nevi?
12.What is the term for increased melanin pigmentation that occurs during pregnancy?
13.Which area on the orofacial skin is most frequently affected by melanoma?
14.What condition causes a yellow tint to the oral mucosa, skin, and the white part of the eyes?
15.Which of the following symptoms is NOT typically associated with lead poisoning?
16.Which condition is characterized by mucocutaneous pigmentation around the mouth?
17.What type of discoloration is typically caused by tetracycline in teeth?
18.In which condition are port wine stains commonly observed?
19.A patient presents with teeth that have brown discoloration and exhibit fluorescence under ultraviolet light. What is the most probable diagnosis?
20.Which substance is responsible for causing yellow discoloration of teeth in children?