Concomitant severe diseases, diseases expected to interfere with the outcome of the study, or diseases which are contraindications for the use of ICS

COPD (i.e. chronic bronchitis or emphysema) and/or other relevant lung diseases causing alternating impairment in lung function

Use of ICS 4 weeks before entry into the baseline period

Pregnancy

Intention to become pregnant during the course of the study

Breast feeding

Lack of safe contraception

Use of other drugs not allowed

Current smokers and ex-smokers with more than or equal to 10 pack-years

Efficacy of Ciclesonide on Small Airways in Patients With Stable Asthma (18 to 60 y) (BY9010/M1-131)