Now you're down on the ground screaming medic
The only thing that comes is the post-traumatic stresses

from Guy Sebastian (Ft. Lupe Fiasco) – Battle Scars Lyrics on Rap Genius

Meaning

Lupe is expressing the emotional exhaustion caused by frequent flashbacks of all the good times you had with this former ‘lover’.
Post Traumatic Stress Disorder is a common condition 1 in 8 returning US soldiers endure after experiencing traumatic and horrific events.

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