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Clin Rheumatol. 1994 Sep;13(3):442-5.

Cold-induced vasospasm in patients with fibromyalgia and chronic low back pain in comparison to healthy subjects.

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1
Hochrhein Institute for Research and Prevention of Rheumatic Diseases, Bad S├Ąckingen, Germany.

Abstract

Using capillary videomicroscopy of the nail fold, the frequency of cold-induced vasospasm and capillary hemodynamic parameters were studied after application of cold in 50 patients with primary fibromyalgia, 50 patients with chronic low back pain, and 50 healthy controls. Cold-induced vasospasm was detected in 38% of the patients with fibromyalgia. In this group it was significantly more frequent than in the patients with chronic low back pain (20%, p < 0.05) and healthy subjects (8%, p < 0.001). In the fibromyalgia group, the magnitude of vasospasm as measured by the capillary blood flow deceleration after cold application correlated negatively with the pain intensity as measured by pain score (r = -0.3839, p < 0.01). No differences in clinical appearance were found between patients with and without cold-induced vasospasm in both the fibromyalgia and low back pain group.

PMID:
7835007
[Indexed for MEDLINE]
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