sinusitis
"I have had an upper back molar removed today due to a root abscess I didn't even know existed. My head felt like a pressure cooker, I got an ear infection and the mucus drainage was terrible. I went to the doctor who diagnosed a sinus infection, he told me to get my dentist to X-ray my teeth, which revealed a big abscess at the root.
I Had been put on amoxicillin 500mg x3 daily but it wasn't doing a great deal after four days so my GP replaced it with Augmentin)500/125 X 3 daily and after another four days minus a molar the mucus and swelling have improved massively. I can breathe again, plus the head pressure has subsided. Works well at the moment with 3 days of the 7 day course remaining. Hope it works for you.
GOOD HEALTH TO YOU ALL."