sinusitis
"Had a bad cold that got better but got worse. Muscle and joint pain, lethargy, fatigue, postnasal drip. I have sinusitis history but nothing this worse. My doc gave me Clarithromycin 500mg. Just took my first dose, laid down, and poof. All muscle pains gone. I can actually get up and catch up on office work etc. Agree on the weird taste in the mouth, but not too bothersome."