I think it depends on what field you're in within medicine. I think I would be willing to bet strokes would be high up on that list. There's a lot of neurologic conditions that strokes can mimic depending on severity. One that gets missed a lot of the time is vision related strokes (like a central retinal artery occlusion or a branch retinal artery occlusion), since a lot of doctors aren't super confident in their ophthalmology training. Or mimickers like migraines.