BACKGROUND Cough is an important symptom of patients with chronic obstructive pulmonary disease (COPD). The cough threshold to citric acid and capsaicin in patients with COPD and in normal volunteers ...
"A dry cough means it’s tickly and doesn ... its own without treatment after three to four weeks. However, a persistent cough that sticks around for longer than three weeks could be a sign ...
During cold and flu season, it can be challenging to differentiate illnesses like the common cold, flu, COVID-19, respiratory syncytial virus (RSV), and norovirus.