"CT "
"Asthma is one of the most common chronic diseases in the world. According to the 2022 Global Asthma Report, an estimated 262 million people worldwide have asthma 17, and the estimated mean prevalence of clinical asthma in the UK is 18.2% 18."
"Lung function tests are useful in the evaluation of a patient with asthma to assess the presence, severity and reversibility of the airflow obstruction. On spirometry, an FEV1/FVC ratio"
Expected headings
"Associations"
"Subtypes"
"CT "
"Complications"
"Asthma is a relatively common condition that is characterised by at least partially reversible inflammation of the airways and reversible airway obstruction due to airway hyperreactivity. It can be acute, subacute or chronic."
"The classic symptoms of asthma are wheeze, shortness of breath, chest tightness or difficulty breathing and cough. These symptoms are typically variable and can be absent for long periods, with possible episodic exacerbations often triggered by factors such as exercise, allergen or irritant exposure, cold air, or viral respiratory infections."
"Lung function tests are useful in the evaluation of a patient with asthma to assess the presence, severity and reversibility of the airflow obstruction. On spirometry, an FEV1/FVC ratio"
"In some patients, this may precipitate at a later age; see: late-onset asthma"
"Reported HRCT features of asthma are non-specific as individual features; they include 2:"
"There are several conditions that can complicate asthma; they include 1,6,16:"
"There are several conditions that can complicate asthma; they include 1,6,16:"