Clinical classification of fibromyalgia according to disease progression
- K Nishioka1
© The Author(s) 2004
Published: 13 September 2004
The number of fibromyalgia patients has recently been increasing in Japan. We currently studied numerous patients with early to severe neuropathic pain on not only 'specific sites' according to American College of Rheumatology ACR-90 criteria, but also widespread severe pain such as hyperpathia or allodynia.
Symptoms in these patients are sometimes accompanied with extra-muscular symptoms such as irritable colon, interstitial cystitis, severe dry eye and mouth, and various psychogenic symptoms. Twenty-seven patients with severe and systemic complications were misdiagnosed with other psychogenic disorders. We classified patients with fibromyalgia in five categories according to disease progression.
Patients and method
Classification of fibromyalgia according to disease progression frequency in 153 cases
Existence of pressure pain on specific sites according to ACR-90 criteria
Expanding of pain from trunks to extremities and also changing nature of pain from pressure pain to spontaneous pain
Persistent pain is generalized and induction of burning pain by mild change of temperature, stimulation on nail and hair, and so on
Sleep disturbance, restless, interfere keeping same postulation by hyperpathia, severe decreasing quality of life, allodynia
Severe pain is generalized and complicated tremendous extramusculoskeletal symptoms such as irritable colon, bladder, dry eye, dry mouth and mucocutaneous symptoms
Results and discussion
As shown in Table 1, 64 patients fulfilled the ACR-90 criteria. Patients classified in stages II-IV had painful symptoms that spread through the whole body and were extremely severe. Eight of 153 patients had extramuscular systemic symptoms. The results of the SPECT study revealed that 80% of the 40 patients clearly identified a low level in regional blood flow. Twenty-seven cases of the patients were misdiagnosed with psychogenic or neurological disorders for a long time. Based on such clinical diversity, it is essential to classify fibromyalgia according to disease progression.