Of course, I am not a doctor or nurse, but this is the information spread by people who suffer from rheumatism. Of course, it can still be a placebo effect, but who knows, perhaps there is a grain of truth in it. Woollen products, such as a cashmere wool duvet, merino wool blanket, clothes or woollen bedding are believed to help patients who suffer from rheumatism. Of course, you should never use such product and neglect standard medical treatment. You ought to contact your doctor if you think that you might suffer from this condition. Some common symptoms include: swelling of joints, pain, lower back problems, stiffness and redness, to name just a few. Of course, not all of those symptoms will appear at once. Sometimes they are so mild that people tend to ignore them for months, however, once the signs of disease develop over time, the pain and swelling becomes a real nuisance. Contact your doctor if you experience any of the above mentioned symptoms. He or she will advise you what the best treatment is in your case. Of curse, you can always try using products such as a cashmere wool duvet or a woollen blanket, but please bear in mind that they cannot be used instead of professional treatment.