Question 75

Petechiae presents as multiple small red dots on a patient's skin.

Petechiae are small, pinpoint-sized red or purple spots that appear on the skin due to bleeding under the skin. They often result from conditions that affect blood clotting or damage blood vessels.

A) Hematoma

Hematomas are larger collections of blood that pool outside of blood vessels, typically resulting from trauma or injury. Unlike petechiae, hematomas appear as raised areas of discoloration and are not characterized by multiple small red dots.

B) Ecchymosis

Ecchymosis refers to larger bruises that occur due to bleeding under the skin, similar to hematomas but typically more diffuse. While ecchymosis can present as discolored patches, it does not manifest as numerous small red dots like petechiae.

C) Hemolysis

Hemolysis is the breakdown of red blood cells, which can lead to anemia and other systemic symptoms, but it does not cause the appearance of small red dots on the skin. Instead, hemolysis may contribute to more generalized symptoms rather than localized skin findings.

D) Petechiae

Petechiae are indeed characterized by the presence of multiple small red or purple dots on the skin, resulting from tiny hemorrhages. This condition is often indicative of underlying medical issues, such as thrombocytopenia or vascular abnormalities.

Conclusion

In summary, petechiae are specifically defined by their appearance as multiple small red dots on the skin, which distinguishes them clearly from hematomas, ecchymosis, and hemolysis. The other options do not exhibit this particular presentation, making D the only correct choice.