Evidence-based professional reference pages authored by our clinical team for the use of medical professionals. An acute exacerbation is more commonly known as 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 https://intern.ee.aeust.edu.tw/home.php?mod=space&uid=972036