Sinusitis is a condition where the tissue lining the sinuses (small air-filled spaces in the head) becomes inflamed, swollen, and infected. It can cause symptoms such as facial pain, congestion, headache, and fever. Full definition
I have suffered from chronic sinusitis for over 20 years now and have had 2 major sinus surgeries. (pilatesnutritionist.com)
The main symptoms of sinusitis include facial pain or pressure, headaches, runny nose, congestion and loss of smell, or in the worst case scenario — fever, fatigue and dental pain. (fitnessandpower.com)
Other medical conditions that can cause bad breath include infections of the throat and nose such as sinusitis. (womenshealthandfitness.com.au)