#i like to think that Hjer stay awake in the night because he can't sleep due to kept hearing the voice of his dead wife and daughter :)

[invisiblegarabgetruck]

Do you think Hermit Jerry has PTSD?

I do think he does.

like, look at the dark circles under his eyes. he probably hadn't had a good sleep for days.

also, I noticed not only the signs of lack of sleep, if you compare him to his S3-self, Hermit Jerry, is a lot smaller than himself in S3E1. so I think he's physically weaker and hasn't been taking care of his body much.

there is also when Morty first finds his camp and it was quite far away from the house. avoiding the place that would remind him of his family (and since Beth and Summer likely died at the house, I could see why)

He only returns to the house when he met Morty. but then he quickly abandons Morty and the house to Isolate himself again.

and other things like being on guard all the time. acting aggressively (even toward Morty)

(off topic but Chris Parnell is such a good VA)

though most of this is just my thoughts