How long does it take to get rid of pleurisy?

Depends on cause: Duration of recovery from pleurisy depends on underlying cause. There are several infectious and non-infectious conditions that cause inflammation of the lining of the lungs (which is what pleurisy is). Talk to your lung doctor to understand the cause of pleurisy & discuss the duration of treatment and expected course during therapy.

Pleurisy : It will depends on the cause of pleurisy. http://patient.info/health/pleurisy-leaflet