Non-interventional Study With Ectoin Containing and/or Decongesting Nasal Spray in Patients With Rhinosinusitis

The goal of this non-interventional study is to investigate the efficacy and tolerability of an Ectoin containing Rhinosinusitis Nasal Spray (SNS01). Within the study, SNS01 will be used either alone as monotherapy or as concomitant therapy in addition to the use of a Xylometazoline-containing decongestant nasal spray. A control group will use a Xylometazoline-containing decongestant nasal spray as monotherapy. It will be investigated if the dose of the used decongestant nasal spray might be reduced, the development of the disease might be positively influenced and/or the potentially occurring side effects (e.g. dryness of the nasal mucosa, sneezing) might be alleviated by using the Ectoin containing Rhinosinusitis Nasal Spray as concomitant therapy.