After having my wisdom teeth pulled 5 years ago, I went through a time with pleurisy. My physician figured it was from the anesthesia that I had for the extractions. My physician also mentioned that there are two types of pleurisy, dry pleurisy or pleurisy with fluid in the pleural cavity. Whenever a pain (contraction) would come about, it was extreme stabbing pain. I had dry pleurisy.
I did get some relief with a heating pad on my chest. I actually preferred laying on the heating pad, the compression helped a great deal. They offered pain meds, but I didn't use them. I didn't have pneumonia, I figured there wasn't a need for any medication.
Heat and compressing a pillow to the thoracic region helped. It might help your client too. Just a thought.
-Grapeseed