OBJECTIVE: To investigate the association and prevalence of sleep
disturbances and fibromyalgia (FM) in a group of patients with
primary Sjogren’s syndrome (pSS).
METHODS: Sixty-five patients
with pSS were investigated. A 10-point Mini Sleep
Questionnaire (MSQ) was completed focusing on sleep
complaints. The same questionnaire was also used in three
control groups: Group A-67 patients with rheumatoid arthritis.
Group B-53 patients with rheumatoid arthritis (RA) and sicca
symptoms; Group C-31 patients with osteoarthritis. All
patients with pSS were also studied fro the presence of FM.
RESULTS: Moderate or severe sleep disturbances were reported
by 49 out of 65 pSS patients (75%). This frequency was
significantly higher than that reported by patients in the
three control groups (p < 0.001). FM was present in 36 out of
65 pSS patients (55%) and was associated with sleep
disturbances. FM or sleep disturbances were not associated
with any clinical or laboratory parameters.
results suggest that sleep abnormalities and FM in pSS
patients are frequent and their etiology might involve other
mechanisms besides joint pain or sicca symptomatology.