Impact of habitual marijuana and tobacco smoke on severity of chronic rhinosinusitis.

Health concerns around cannabis (marijuana) use have focused on the possible relationship with psychosis and lower airway health, however; the effect of cannabis smoking on upper airway health has received less attention. The aim of this study is to investigate difference between exclusive tobacco cigarettes smoking compared with tobacco plus cannabis smoking regarding severity of chronic rhinosinusitis (CRS).A prospective cross-sectional study with two groups of CRS patients recruited (Group 1: tobacco cigarettes smokers; 100 patients and group 2: tobacco cigarettes smokers and also cannabis users; 100 patients). Recruitment occurred in a general practice in Egypt. Cannabis use was recorded by self-report. Severity of CRS was assessed and compared between 2 groups using SNOT-20 questionnaire, Lund-Mackay CT score and Lund-Kennedy (LK) endoscopy Score.Group 2 patients (tobacco plus cannabis smokers) had significantly higher mean of assessment cores (SNOT-20 (P = 0.005), Lund-Mackay CT score (P = 0.006) and Lund-Kennedy (LK) endoscopy Score (P = 0.005)). Group 2 patients also had significantly higher mean of facial pain/pressure, difficulty sleep, and wake at night, lack of sleep, wake up tired, fatigue, reduced productivity, reduced concentration, frustration/restless/irritable, sad and embarrassed compared to patients in group 1.Adult patients who smoked tobacco cigarettes plus cannabis mixed with tobacco had greater health related quality of life burden and more severe CRS compared to patients who smoked tobacco cigarettes only.