I have extreme pressure and pain around the sinus area , upper teeth pain . This is alw ays in late afternoon. Have seen specialists and had scans ultrasounds done  all negative. No polyps or sinusitis . Was told have a chronic delayed headache and to take ibuprofen, dint help. This cause extrem sleepiness and I Fall asleep sitting when these symptom occur. Yes saw sleep doc no sleep apnea. DESPERATE . Please help