Hi. You clearly have a significant medical history. You describe a double organ transplant but do not go into detail. However, presumably you are taking immunosuppressant medication. Does your neurologist feel that your headache is due to sinusitis or something similar? Do you have symptoms of runny nose/eyes, bunged up nose, intermittent headaches. Or are your symptoms persistent headaches which are resistant to tylenol and aspirin and the worst you have ever experienced, in the absence of other coryzal symptoms? If your symptoms are closer to the latter then raise your concerns with your neurologist or your transplant team as you will need a CT or MRI scan of your head to ensure there is no underlying pathology.