If you took an antibiotic for that infection then you have to heal the damage done to your gut lining by that antibiotic before you can get back to normal.

I don't have any thoughts other than to say I hope you feel better soon!
I'm curious, were you using medication that was controlling your PsA?

I’ll start off by saying I’m not a doctor, but my understanding is that psoriasis is a mechanism of an overactive immune system. Strep might seem like a minor illness, but your immune system has to do a lot of work to clear the infection. I imagine those darn streptococcus bacteria might have pushed your immune system back into overdrive. Whatever the reason is, I hope you’ll be back in remission before too long.

I wasn't I haven't been on mtx for 8 years just Prednisone about once a year for a few weeks when I got flares...now it's fully back and terrible pain two weeks after strep throat!

Infections hog your immune system and suck up all its attention. So psoriasis gets worse.