A healthcare worker is observing a patient’s red blood cells under a microscope. Which disease is the healthcare worker most likely trying to diagnose?

Sickle cell anemia changes the shape of red blood cells, making them crescent- or sickle-shaped, so examining these cells can help diagnose it. Muscular dystrophy and multiple sclerosis affect other tissues, while diabetes is diagnosed using blood sugar tests.

AI-written and checked against the verified answer.