Participation of patients is fully voluntarily. Patients are able to stop participation in the study at any point in time. In addition, patients might claim the elimination of all data material at any point in time. Furthermore, study participation will be stopped for the individual patient, if new safety issues occur (e. g. new diagnosis of Diabetes mellitus, pregnancy or acute infectious disease) during the study. Relevant risks to the patients are highly unlikely. However, if 2 or more patients experience serious adverse events associated with the vaginal administration of prednisone with high likelihood, the study will be stopped.