Define the syndrome.
Asthma-COPD overlap is the presence of features of both asthma and COPD in an individual.
Asthma-COPD overlap is not a distinct disease entity, but a term used to describe a heterogeneous category of patients with features of both diseases
List clinical features
Chronic presentation, most commonly with intermittent or episodic symptoms
Common symptoms include cough, SOB, chest tightness, and wheezing.
Symptoms may:
Worsen after exposure to common triggers for asthma, e.g., pollen
Improve after use of antiasthmatic medications
May develop in patients with a known history of asthma or COPD
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