ObjectiveWhile general health may be influenced by sinonasal symptoms, their effects may be overshadowed by comorbid states which may be more serious. To assess the validity of this postulate, we measured the extent to which sinonasal symptoms and concurrent conditions influenced general health.Study DesignObservational outcomes study.SettingAcademic medical center, community care sites.MethodsAdults with sinonasal symptoms completed the 22‐item Sinonasal Outcome Test, along with the Patient‐Reported Outcomes Measurement Information System global health short form. Comorbidities were categorized with the Deyo modification of the Charlson comorbidity index. Multivariate regression analyses were utilized to determine the relative impact of sinonasal symptoms and concurrent comorbid conditions on general health.ResultsData from 219 consecutive patients demonstrated that sinonasal symptoms were associated with significantly diminished general physical (β = −1.431, p < .001), mental (β = −1.000, p < .001), overall (β = −1.026, p < .001), and social health (β = −0.872, p = .003), regardless of the presence of potentially life‐threatening comorbid conditions. Comorbid conditions included cardiovascular disease, chronic obstructive pulmonary disease, connective tissue disease, peptic ulcer, diabetes mellitus, and hepatic disease. The effect of sinonasal symptoms was neither subsumed nor overshadowed by the effects of comorbid states. Nasal, ear, sleep, and psychological domain scores were also associated with general physical, mental, and global health while adjusting for the impact of comorbidities.ConclusionSinonasal symptoms have a substantial effect on general health which is not subsumed by the presence of potentially life‐threatening concurrent comorbidities. These data may help support the importance of funding and resource allocation for conditions causing sinonasal symptoms.