Hi all!
You know how we are so often assured that PMR burns itself out in a couple of years? After reading Pandemonium's post I went off to do my usual searching the Internet for medical studies and found the one that is probably the answer to why we are told this despite the number of us who know, to our cost, it ain't necessarily so! If only it were!
A group did a study in the mid-1990s and found that they could divide the patients looked at into 3 groups. Group A had a low ESR at the onset of the illness with a relatively mild seet of symptoms, responded extremely well to 20mg/day steroids, were able to taper the dose easily and were off steroids within 6 to 8 months, experiencing very few flares in that time. They remained disease-free 2 years later. Group A represented about a third of the population studied.
Group B had a higher ESR (and another inflammatory marker was raised) and worse symptoms. They did not respond as well to the initial dose of 20mg/day but did respond very well to 30mg/day. They had more flares during the tapering period, requiring the dose to be upped by 5mg/day to control the flare before continuing the taper process. On average, they got off steroids in about 2 years and then remained mainly disease-free for the next 6 months or so. This group represented 44% of the study group.
Group C did not respond to steroids as well, having residual pain and stiffness even at 30mg/day and had considerable problems tapering, experiencing frequent flares, particularly once they got to 7.5mg/day and most needed to remain on steroids at a low-ish level for a long time. This group was about a quarter of the original group.
The researchers feel this result indicates 3 very definite presentations of PMR. I didn't note whether they noted a gender difference - we've said often here that men may respond very differently to women. They did postulate a few ways in which it might be possible to predict which group you might be in before starting with treatment because one thing they did suggest was that a good control of the inflammation at the beginning of treatment was associated with the longer-term prognosis. They seemed to feel that if you lost control of the symptoms with the steroids early on then it might well be indicative of a longer and more difficult journey down the tapering path - though whether this is the cause or the effect of being one of the group C-type patients is not clear. Nor was there any suggestion as to whether there might be different mechanisms of the PMR syndrome in the different groups, which is also a possibility. For example, another paper I read this afternoon did actually mention they believe there is a degree of poor adrenal function in patients with various autoimmune diseases including PMR - these could well be the Group C patients who need much longer treatment in the form of a \"replacement\" of cortisol production at about 5-7.5mg/day which is the amount your body should normally produce.
So there you are gals and guys - scientific confirmation that we do indeed respond differently to steroid treatment! Don't let anyone bamboozle you into reducing your dose if it doesn't feel right \"but Mrs Cuthesteroidose is already on 2mg/day after 6 months\". :lol:
what a lovely day it is here - nearly as warm as the UK might be tomorrow!
cheers, EileenH