Karren, with Fibromyalgia applying pressure to certain parts of the body can trigger pain.
When suffering from both PMR and Fibro at the same time, it can be difficult to tell the difference especially if you haven't experienced either one on their own previously and got used to recognising the symptoms of each.
A list of comparisons was published by the Fibromyalgia Association UK a few years ago which may help:
Polymyalgia
Affects people over 50 years
An inflammatory condition
Symtpoms of severe pain, stiffness and tiredness
Can be accompanied by inflammation of the arteries
Treatable with steroids
Responds well to treatment
Many side effects of steroid treatment
Good prognosis - generally lasts 2-3 years
Fibromyalgia
Affects people of any age
An abnormal pain processing condition
Symptoms of widespread chronic pain, persisten fatigue and non-refreshing sleep
Many associated symptoms including cognitive dysfunction, IBS and anxiety
Treated with analgesic painkillers, low-dose antidepressants and lifestyle changes
Treatment response is variable
Variable prognosis - symptoms can improve but can last many years