Judith, if the cough is a dry cough (little or no mucus involved) it is very possible that one of his medications may be inducing the cough. You can look them up online to see if a dry cough is a side effect. Also, when someone is ill and their immune system is compromised they may show some lung irritation and have a slight (yet arrgravating) cough. You may need to get a cool air mist humidifier that you can place by his bed at night. The reason I say at night is because that is primarily when we are laying down for long periods of time. Once asleep we open our mouths and breath all night with an open mouth. This of course dries out the mouth and lung tissue causing more coughing. The cool mist soothes that and replaces the dryness with moisture. Just make sure that if you do get one that it is "cool air mist".
“Life is not the way it's supposed to be. It's the way it is. The way you cope with it is what makes the difference."
Carol Talk about sweating buckets. I am wet most of the time. It is now 80 degrees in our house and Jerry has a blanket around him. What is that.
PS. He's up again. He said he can't lay down. It might be a long night for him.