Tony, the member really needs a MRI!!! The symptoms are odd. I would definitely make that the number one priority for the member. It is an 'odd' set of symptoms and that makes the MRI more imperative in my mind.
For me, a sinus infection has obvious signs of infection: nasal discharge that is green or yellow. One side may get worse than the other if I have been lying with that side down. Otherwise, no. I have not found bleeding to be part of a sinus infection. In addition, with a sinus infection, my whole head hurts, not one side.
But, we do know that some things being wrong in the brain can cause pain and symptoms. We had a young Canadian member who was having 'mostly' cluster symptoms, but with some odd bits mixed in. He finally had the MRI after over a year and they found an aneurysm and operated. He was pain free post surgery. He had daily pain that fit CH best of all the headaches, but it was not CH. He also had some 'odd' symptoms. Being in the Canadian system, meant that it took over a year to get a MRI.
Please encourage him/her to push for that MRI like they their life depended on it. If medical won't do that, then a scan might help show an issue and then they would agree to the MRI. The symptoms worry me. I want to know how this turns out in the end, so please give us an update if you get one.
As a side note to this, a friend took her grown son in for hernia surgery last Friday. He had been complaining bitterly about the pain from the hernia. Doc said he should not be in that much pain and blew him off, but did schedule the surgery. When they went in, they found a tumor along with the hernia. Ergo, the excessive pain in the belly. The tumor was pushing on internal organs. Had they bothered with a scan, they would have found it sooner. And he would not have been left to suffer waiting for 'elective' surgery during the pandemic.
Seeing what is or isn't inside is a good diagnostic tool to use!