bronchitis
"I was given this drug for bronchitis.  I've had the worst diarrhea, dizziness and nausea.  I need to be near a toilet at all times for fear of destroying my pants.  (sorry for the TMI).  I'm starting to get better so, rather than feel like I have an intestinal virus I'm just stopping the drug and riding out the rest of the bronchitis.  That should tell you how awful I feel while taking this."