Coughs notably persist beyond the illness that causes them - they can become self perpetuating by causing inflammation that in turn makes you cough. I've found taking cough drops is a great way to break this cycle.
So... yeah, persistent cough is a non-symptom, and I suspect a decent amount of long COVID research is a function of perverse incentives in medical research.
So... yeah, persistent cough is a non-symptom, and I suspect a decent amount of long COVID research is a function of perverse incentives in medical research.