Emotional eating triggered by chronic pain?

I have been on sulfasalazine for my PsA, and I thought it wasn't helping all that much. However, I needed to stop it for my upcoming surgery, and I've been off for a week now. I was wrong, wrong, wrong. My pain level is escalating, and I just hope it levels off soon. While my surgeon said it was OK to take advil and tramadol as needed, I am trying to minimize how much I take pre-op.

What's surprised me though is the way I feel driven to eat large quantities of crap as my pain increases. I had been working on my emotional eating with my therapist and been doing really well listening to my body and stopping when I'm full. I know this is not body hunger, but I'm having a really hard time managing it. And the crafts I would normally do (knitting, beading) aren't an option when my hands are hurting this badly.

Has anyone else experienced cravings for almost binge eating due to pain? If so, how do you manage it?