Hi , I'm so sorry to read about these low-grade fevers that you're dealing with. We definitely have other community members who struggle with this, so I hope they'll stop by to share their ideas with you. I do tend to feel overheated a lot of the time, but I don't ever actually have a high temperature. Whilst you wait for replies, you might be interested to read the following article, where mentions low-grade fevers and flares: https://psoriatic-arthritis.com/living/body-temperature There's also a community discussion which may be of interest: https://psoriatic-arthritis.com/forums/flare-body-overheated I hope this is of some help. Have you been able to check in with your doctor about this? And are you treating your PsA with anything at the moment? Best wishes, -Catherine, Community Moderator