2 doctors weighed in:
What can cause sinusitus?
2 doctors weighed in

Dr. John McClay
Surgery - Head & Neck
1 doctor agrees
In brief: Nasal swelling
Anything that clogs the nose can block the sinuses.
Common causes of nasal swelling include upper respiratory tract infections (colds) and allergies. Once the sinuses cannot drain, bacteria can accumulate in the sinuses and increase in large enough numbers to cause the symptoms of infection. The bacteria can come from various sources, including the nasopharyx and the adenoids that reside there.

In brief: Nasal swelling
Anything that clogs the nose can block the sinuses.
Common causes of nasal swelling include upper respiratory tract infections (colds) and allergies. Once the sinuses cannot drain, bacteria can accumulate in the sinuses and increase in large enough numbers to cause the symptoms of infection. The bacteria can come from various sources, including the nasopharyx and the adenoids that reside there.
Dr. John McClay
Dr. John McClay
Thank
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