In the first verse of Lose Yourself, Eminem scores 15 points on the NIH Stroke Scale, indicating a moderate to severe stroke.

• Diaphoresis (palms sweaty) - Not scored

• weakness (knees weak, arms heavy) - open to interpretation, but i'll give him +1 for mild weakness in each extremity: +4

• Vomiting (on his sweater) - not scored

• facial paralysis (nervous... looks calm) +3

• Inattention (keeps on forgetting) +1

• Hyperacusis (whole crowd oh so loud) not scored

• Aphasia (words won't come out) +5

• Dysphagia, dysarthria (choking) +2

Unfortunately, he's out of the treatment window. Clock's run out. Times up over POW!

Edit: Added scoring breakdown for the curious