This was taken from a site I came across whilst looking for information on PR. I thought I should included it for those that have Rheumatism and not PR, it's worth a read anyway.
Though muscular aches and pains in cold or damp weather are real enough to many elderly people, 'rheumatism' has no precise medical meaning. Vague muscular pains may be early warnings of Rheumatoid arthritis, which only later affects the joints, or they may be the result of a virus infection such as Influenza, a food allergy, or Candidiasis, all of which can cause mild inflammation in muscle tissue. Muscular pains in the limbs are not part of the symptomology of Osteoarthritis, which affects joints only.
While conventional medicine prescribes anti-inflammatory drugs and painkillers, homeopathic treatment is constitutional, although the remedies given in Self Help section should be tried first.
Specific remedies to be taken 4 times daily for up to 14 days
Self-help Follow the alkalinizing diet for 1 month. If aches and pains subside, continue to eat a moderate amount of alkalinizing foods. Also, take extra Vitamin B6, magnesium, and calcium.