Sinusitis: Headache for 3 weeks and sinus pain may be chronic sinusitis. Lasting that long - you should see a doctor. Though sinus pain is not often described as "burning", so that has me a little confused. Until you're seen - try steam inhalations and pain relieving medications. Hope you're better soon. 3 weeks is a long time to feel bad.
Answered 5/8/2014
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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