It's difficult to make a full assessment as you have a variety of symptoms. The fact the cortisone has no beneficial effect, makes an allergic condition less likely to be implicated. The normal MRI scan of the sinuses makes chronic rhino sinusitis less likely as well. Albany brown bread specifically isn't a common trigger for headaches, but if you have Temporo-Mandibular Joint (TMJ) pathology this may be implicated. Bee venom allergy would not be a contributory factor.
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