In this series:Steroid injectionsOral steroidsTopical steroidsFingertip units for topical steroidsSteroid nasal sprays An acute exacerbation is more commonly known birli a 'flare-up'. An acute exacerbation of chronic obstructive pulmonary disease (COPD) is a sudden worsening of COPD symptoms compared with the usual severity of symptoms. A nasal spray containing a http://delphi.larsbo.org/user/tipfifth2