Clinical serverity of COPD is based not only on the grade of obstruction in spirometry, but also on symptoms and risk of exacerbations. Symptoms can be defined by questionnaires, such as CAT-test (COPD assessment -test) or mMRC (modified Medical Research Council -test). Smoking cessation and physical activity are important treatment options. Pharmacological treatment is selected by symptoms, risk of exacerbations and co-occurrence of asthma and COPD. Non-invasive ventilation (NIV) is recommended in the treatment of severe hypercapnic exacerbations. Palliative treatment of end stage COPD is included in the guidelines.