oh I'm so very glad that you've been able to get some relief from the pain that sent you to the ER! What a stressful and scary experience. IBS can be so frustrating and tricky. And, it is a common comorbidity with HS, so you aren't alone in having this double diagnosis. Also, I wanted to let you know that we have a sister site for those with IBS, if you're interested in having a community with others who know and understand the specifics of what living with IBS can look like, https://irritablebowelsyndrome.net/.
As far as the itchiness goes, is that something that your doctor is aware of? I'm just wondering if it possibly started after you started your new medication and could be a side effect? (I have no idea, just thinking aloud.) But in any case, if you haven't already, I would mention it to your doctor in case it's something that can be addressed. That being said, it does sound like you've had a lot of symptoms and are already in good contact with your doctor.
I'll keep my fingers crossed that you continue to move toward relief and that the appointment in December goes well. Please, if you're comfortable, continue to keep us updated with how you're doing. Sending gentle hugs. -- Warmly, Christine (Team Member)