What Causes Recurring Headaches, Vomiting And Anxiety Attacks?

My spouse has been suffering from regular headaches every day, some more severe on other days, is dizzy when he wakes in the morning, frequently drops things, throws up about every 3-4 days, has anxiety attacks frequently, doesn t sleep well at night and is irritable quite often. He has had an upper GI, MRI of his head and blood work. The tests all came back negative for anything. Is there something we re missing that we should be asking his physician? Can you give any advice of what it could be?