infection of the sinuses is common and often becomes chronic
most commonly bilateral sinusitis is a complication of upper respiratory tract infections
chronic unilateral maxillary sinusitis is very suggesting of an odontogenic sinusitis
incidental bilateral sinusitis on CT brains down for other reasons is generally incidental and should not automatically be assumed to be the cause of the patient's symptoms
Mx of acute sinusitis
broad spectrum antibiotics such as Augmentin Due Forte (adults)
PLUS a short course of oral corticosteroids such as prednisolone 25-50mg/day in adults 1)
consider home sinus self-irrigation with saline
avoid tap water without it being sterilised if possible as there is a very small risk of lethal ameobic meningitis due to Naegleria fowleri
~20% of patients having CT brain for headache or mild CHI will have a CT report of “chronic sinusitis” - this finding without acute URTI should probably NOT warrant Rx and is probably NOT the cause of an acute headache 2)