Disturbed Sleep Common in Patients With Psoriasis
Nearly half have disrupted sleep at least once per month; psoriatic arthritis is strongest predictor
FRIDAY, April 17 (HealthDay News) -- In patients with psoriasis, psoriatic arthritis and several other factors are predictors of sleep interference, according to a study published in the April issue of the Journal of the American Academy of Dermatology.
Kristina Callis Duffin, M.D., of the University of Utah in Salt Lake City, and colleagues analyzed responses from 420 patients to the 2005 National Psoriasis Foundation telephone and e-mail surveys.
Overall, the researchers found that nearly half of the respondents said that psoriasis interfered with their ability to sleep at least once per month. They also found that the most significant predictors of sleep disturbance were psoriatic arthritis, itch, pain of lesions, and impact on emotional well-being (odds ratios, 3.26, 1.26, 1.22, and 1.18, respectively). Body surface area covered with psoriasis, body mass index, and therapy were not associated with sleep interference.
"Although sleep disturbance is common among patients with inflammatory arthritis, there are few studies examining sleep in those with psoriatic arthritis," the authors write. "Up to 70 percent of patients who have rheumatoid arthritis have sleep symptoms and associated daytime symptoms, including difficulty falling asleep, frequent awakenings from sleep, daytime sleepiness, and fatigue. Patients with psoriatic arthritis also may have varying amounts of psoriasis, which may have an additive effect on sleep interference."