as a new member, I would like to offer the following opinion re pain behind the eye. I have had this for at least 25 years - it occurs haphazardly - and I have put it down variously to stress, sinus, allergy.
Recently, a lump grew on the side of my neck; the lump grew overnight, and it was the size of a golf ball - 6 cms across and very visible, and very rare for a male in their 50's. I now have to have my thyroid removed as the thyroid is bleeding into itself, the lump re-grows after being drained of fluid, and the lump is too large to keep performing FNA's. My theory is that given bulging eyes is a common symptom of hyperthroidism, couldn't pain behind the eye be related to an overactive thyroid? My right eye goes blurry from time to time, and then returns to normal a few days later. - the left eye is ok. This may also be associated with the thyroid.