#9 Asthma is a complex disease involving many different cells Current thinking on the pathophysiology of asthma regards it as a specific type of inflammatory condition, involving, in particular, mast cells, eosinophils and T lymphocytes, which release a wide range of inflammatory mediators These mediators act on cells in the airway, leading to contraction of smooth muscle, oedema due to plasma leakage and mucus plugging
#30 Slide 15 • Asthma severity is graded, in the GINA guidelines, according to the frequency of symptoms, occurrence of symptoms at night, and PEF measurements (compared to predicted values and extent of variability) before treatment