Final answer:
Pernicious anemia may cause glossitis due to vitamin B12 deficiency, while it is not typically associated with lingual ulcerations, parotid swelling, or gastric hyperacidity.
Step-by-step explanation:
Pernicious anemia can lead to various symptoms due to the deficiency of vitamin B12. Specifically related to oral health, pernicious anemia may cause glossitis, which is a characteristic inflammation of the tongue presenting a magenta color. This is caused by the poor absorption of vitamin B12, commonly seen in diseases like Crohn's disease or after surgical procedures affecting the stomach or intestines. In contrast, lingual ulcerations, parotid swelling, and gastric hyperacidity are not typical presentations of pernicious anemia. Instead, it's characterized by achlorhydria or the absence of gastric acid secretion, which is the opposite of hyperacidity.