Possible sinusitis: This can be due to an infection in the sphenoid sinus which is in back of the skull. If you've had a recent upper respiratory infection, this would be a likely cause of the headache. Discuss this with your physician who will order the appropriate tests and treatment as well as refer you to an otolaryngologist or neurologist depending on his/her assessment. In the meantime, stop smoking.
Answered 9/28/2016
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A doctor has provided 1 answer
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