Carol Anne M
The short answer to your question is PMR a Virus is we do not know, currently there is no known cause or cure. Pred alleviates the symptoms and that it all.
PMR has a mind of its own - it comes when it wants and goes when it wants.
If you visit www.pmr-gca-northeast.org.uk, there is medical information, patients information, helpful advice on exercise, fatigue and people's stories. There is also a DVD made specifically for PMR and GCA patients.
To be diagnosed in May this year and now trying to exist of 7.5mg I am not surprised that you are still in pain. That is a quick drop.
You may like ask your GP for a full spectrum blood test and also ask him to include, a thyroid test and a Vit D deficiency check.
The Vit D, if deficient can also cause muscle weakness and pain and is quite common in people who are getting on a bit. If its deficient, you need at least 2000 units per day.
Remember also that the ESR and CRP are just guidelines - the ESR is higher as you get older and also its higher in women than men.
Past threads have explained, that once diagnosed the markers are just that, markers - they can rise if something else is going on.
Osteo - Gluscosamine (1500mg) per day can help with Osteo, but it does not work for everyone. I was lucky it works for me and is a tremendous help. I was prescirbed it because Volterol was not compatible with Pred and I did not want a Kenelogue injection.
EileenH takes is with another tablet, whose name I forget, but Eileen will tell you.
Finally, you do not say where you are located, but on the website I have referred you to, you will find a list of support groups or contacts. There may be one in your area.
There is also an International Survey, run by patients and there is a link from the website. It is well worth filling in.
Sorry that there is no magic bullet - but one day if we keep pushing there might be.
Good Luck and learn to go with the flow.