Cough Reflex Test Practice 2025 – Complete Exam Prep

A cough that worsens when lying down is often associated with specific respiratory conditions, particularly those related to postnasal drip and bronchiectasis. When a person lies down, gravity affects the drainage of mucus, potentially leading to an increase in postnasal drip, which can irritate the throat and trigger coughing. Additionally, bronchiectasis, a condition characterized by the abnormal and permanent dilation of the bronchi, can result in excessive mucus production. When lying down, mucus may pool and irritate the airways, resulting in increased coughing.

Both chronic postnasal drip and bronchiectasis can lead to significant cough symptoms that are exacerbated by lying flat. Asthma, on the other hand, typically does not have a direct correlation with position in terms of worsening cough, and while it can cause nighttime symptoms, it is not specifically characterized by increased coughing when lying down.

Thus, recognizing that chronic postnasal drip and bronchiectasis are both conditions that can manifest this specific symptom provides a basis for concluding that both A and C are correct answers in this context.