Sinusitis Symptoms: Swelling and Mucus – a Painful Combination
Sometimes a respiratory tract infection can affect your sinuses and cause the mucus membranes (mucosa) inside your sinus cavities and nasal passageways to become inflamed. Your sinuses start to produce more mucus that is extra sticky.
This extra mucus (along with swelling) blocks the passageways and causes buildup. Mucus can’t get out like it normally can. This blockage leads to sinus pressure and pain.