The author presents in her article etiopathogenesis of two most frequent lung diseases and relevant diagnostic procedures, treatment and review assessment criteria using her experience related to her former specialization of the pneumologist. She stresses the shortcomings of the diagnostic methods which require the collaboration of a patient and may not produce valid outcomes.

        Key words: asthma bronchiale – chronic obstructive bronchopulmonary disease – examination of lung functions – assessment of working inability