Introduction Psoriasis is a chronic, autoimmune, inflammatory skin disease affecting 2–4% of the general population, which nowadays is even perceived as a systemic illness. The nature of this dermatosis may negatively influence patients’ general condition, life expectancy, and quality of life, which highlights the severity of the problem and the need to perform further investigation. We aimed to assess quality of life, stress severity, and physical activity of patients with psoriasis in relation to demographic and clinical data and comparison to the control group without dermatoses. Methods A set of surveys was conducted in 56 patients with psoriasis hospitalized at the Department of Dermatology, Medical University of Bialystok. Questionnaires used involved the Dermatology Life Quality Index, WHO Quality of Life questionnaire, International Questionnaire of Physical Activity, and a self-invented stress survey. Obtained data were compared to a sex- and age-matched control group without dermatoses. Statistical analysis was performed using GraphPad Prism. Results Patients with psoriasis were found to be significantly less satisfied with their health and had lower scores in WHO social, environmental, and psychological domains, comparing to controls. Patients reported higher stress severity and lower satisfaction with sex life and physical appearance than controls. Patients with psoriasis also tended to perform less intensive physical activity than controls. Conclusions This study highlights the perception of psoriasis as not only affecting skin but also having a multifactorial impact on psychological and internal condition. Described lifestyle abnormalities can be easily evaluated with validated questionnaires, which could be introduced to patients in order to raise their awareness of comorbidities and mobilize them to modify incorrect lifestyle habits. Screening for other disorders and introduction of a holistic approach to every patient could be beneficial because the improvement of patients’ life quality is one of the most important issues.

Psoriasis is a chronic, inflammatory skin disease affecting 2–4% of the general population. Accompanying subjective symptoms (pruritus or pain) may cause decreased life quality including sleep disorders (SD). Sixty psoriatic patients fulfilled the following questionnaires: Pittsburgh Sleep Quality Index (PSQI), STOP BANG for the obstructive sleep apnea syndrome (OSAS) assessment, and Restless Legs Syndrome (RLS) Severity Scale. Patients’ laboratory and clinical data were also investigated. All data obtained were compared to 40 participants without dermatoses. Mean PSQI, risk of OSAS, and RLS severity of psoriatics were significantly higher than in controls (p < 0.0001, p < 0.05, p < 0.05 respectively). There was a positive correlation between the time of suffering from psoriasis and the risk of OSAS (R = 0.286, p < 0.05). We did not observe any significant relationship between PSQI, risk of OSAS, or RLS and psoriasis severity assessed with PASI (Psoriasis Area and Severity Index). We identified four possible predictors of RLS: glucose, CRP and total cholesterol concentrations, and PSQI. SD are significantly more frequent in psoriatics than in people without chronic dermatological diseases but surprisingly they are not correlated with psoriasis severity. SD decrease patients’ life quality and may result in serious consequences. Therefore, establishing recommendations concerning screening for SD and their predictors should be considered.