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Thank you so much for for all the replies. That's really touching.
I've been for one introductory session, where the pain management team (nurse, physio & occupational therapist) each got up and talked about what it involves, then a woman who had been on the previous course spoke about her experiences. She had fibromyalgia and had been off work for 2 years, but after doing the PM course, she'd found ways of coping and had gone back to work. She looked amazing, was very bright and cheerful, and it was hard to believe that she had such a horrible condition. (The cynic in me wondered if they'd hired an actress for the occasion, but then I thought - NHS spending money on an actress? Nah!)
The next step is a one-to-one session mid-April, then a series of small group sessions, half a day for six weeks, and I'm feeling fairly optimistic about it.
The main benefit of that particular session was realising what a great leveller chronic pain is. The group comprised all sorts of people, ranging from a young guy in his 20s, who'd had a horrible sports injury, to a woman in her 70s, who had tubes up her nose and an oxygen tank to wear as a back-pack. That was so very humbling, seeing the pain that people live with from day to day. I got talking to the woman sitting next to me, and she'd been in a motorbike accident in her 20s and was still on crutches in her 50s. She'd been offered a pain management course years ago, but dismissed it because, like arwyn, thought it was all whale song and joss sticks.
Still in pain and waking up yelping every time I move; still having to tell the moggy he's going to have to wait until Mr Frog gets home to feed him; still alarmed at the weight piling on as a side-effect of the drugs; still taking it out on Mr Frog; still having to rely on Mr Frog to put my undies on (on me that is, not him. I assume). But feeling more positive. Watch this space.