My husband had an MRI for a pituitary tumor, but also found that he has a blood vessel anomoly under the top of his skull. The vessel is rubbing against the skull causing it to wear away. My husband has had chronic headaches for over 3 months and complains of explosive pressure & pain on left side of his head when he coughs, sneezes, strains, etc. We are really worried and cannot get anything to stop the pain, what should we do?