Dental OSCE (Objective Structured Clinical Examination) Practice Exam

What are possible causes of petechiae of the soft palate?

1. Infectious mononucleosis or Trauma

2. Allergic reaction or Trauma

3. Vitamin deficiency or Infectious mononucleosis

4. Hypertension or Allergic reaction

The correct answer is: Infectious mononucleosis or Trauma

Petechiae are small, pinpoint spots of bleeding that occur under the skin or mucous membranes, and in the context of the soft palate, they can indicate several underlying conditions. The correct answer highlights two significant causes: infectious mononucleosis and trauma. Infectious mononucleosis, commonly caused by the Epstein-Barr virus, is known to lead to various symptoms, including lymphadenopathy, fatigue, and, importantly, petechiae. The inflammation associated with the viral infection can affect the blood vessels, causing them to become fragile and result in small areas of bleeding like petechiae. Trauma is another clear and direct cause of petechiae. Physical injury to the soft palate, whether it is due to a foreign object, vigorous coughing, or even surgical procedures, can disrupt the small blood vessels, leading to localized bleeding. The combination of these two factors provides a comprehensive understanding of how petechiae might develop on the soft palate. Other combinations offered in the options do not include both causes as pertinent, missing the specificity and relevance that infectious mononucleosis and trauma present in this scenario.