He's going through a bad/difficult/rough 'patch' [='spell'] right now.
The chair's original paint is still visible 'in patches'. [=in spots]
The doctor 'patched' him 'up', so he's going to be as good as new.
(..) He'll know who I am. All clear. No pathogens. Dr. Cassandra Railly of the CDC. Where's your identification? I lost it. I hit a few rough patches on my way up from Baltimore. Baltimore? On foot? Tell me, Ms. Railly, how did you avoid the West Seven Quarantine Zone? (..)2016 TvShow: 12 Monkeys Title: Lullaby Season: 2 Episode 8