Heading off to Bulgaria on Monday , flight about 4 hrs long . Suffering with chronic ischial tuberosity pain in my bottom so v painful to sit for too long . Have donut cushion so that will help . Any ideas for pain relief ? Diagnosed PMR 8 months ago on 5 mg pred and apart from butt pain I'm doing ok , some bad days but can cope . By the way pain in butt was never relieved with high dose pred so prob unrelated to PMR . Any advice is much appreciated !