Clinical Neuroscience

Restless legs syndrome and insomnia frequency in patients with psoriasis

GULER Sibel1, TEKATAS Aslan1, ARICAN Özer2, KAPLAN Sarı Özlem3, DOGRU Yüce1

SEPTEMBER 30, 2015

Clinical Neuroscience - 2015;68(09-10)

DOI: https://doi.org/10.18071/isz.68.0331

Background - To assess the prevalence and severity of RLS in psoriasis patients and to investigate its effects on sleep and quality of life. Methods - Seventy patients with psoriasis in Trakya University Medical Faculty Dermatology Department and also applied to Neurology Department in the same center and 70 volunteer controls were enrolled in the study. Severity of the Restless Legs Syndrome (RLS) was determined using International Restless Legs Syndrome Study Group (IRLSSG) criteria among the patients who have been diagnosed with RLS based on IRLSSG criteria. The presence of insomnia in patients was detected using International Classification of Sleep Disorders (ICSD-II) criteria. Additionally, to evaluate the severity of the disease and quality of life, Psoriasis Area Severity Index (PASI) and Dermatology Life Quality Index (DLQI) tests were applied to the patients with psoriasis. Results - RLS frequency in patients with psoriasis was 28 (40%) compared to the control group 10 (14.2%), and the difference was statistically significant (p<0.001). IRLSSG severity scores were higher in patients with psoriasis who had insomnia secondary to RLS compared to those who did not have insomnia (p<0.001). The mean values of PASI were 7.54±6.52 in the presence of insomnia and 3.27±2.69 in the absence of insomnia. The difference was statistically significant (p<0.001). No significant difference was found in DLQI scores between patients with RLS and without RLS or between patients with and without insomnia (p>0.05). Discussions - RLS frequency in patients with psoriasis was significantly higher than in the control group. In addition, we found that RLS is more common but RLS severity was mildly high in patients with psoriasis relative to controls. However, there was a correlation between the increase in severity of RLS with secondary insomnia patients who were diagnosed with RLS. It may be beneficial to consider RLS and insomnia for each patient diagnosed with psoriasis.

AFFILIATIONS

  1. Department of Neurology, Trakya University Faculty of Medicine, Edirne, Turkey
  2. Department of Dermatology, Fatih University Faculty of Medicine, Istanbul, Turkey
  3. Department of Dermatology, Trakya University Faculty of Medicine, Edirne, Turkey

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