<s>[INST] My husband is complaining of back and upper abdominal pain. He is throwing up after eating or drinking. Before the pain started he had a bad headache and the one side of each of his eye had a blood vessel that seemed to rupture. He is not showing a fever or body aches. [/INST] Hi. The most common cause of the pain in upper abdomen with backache are 1. Ulcer in the posterior wall of the stomach or 2 Pancreatitis3 The abdominal aorta aneurysm and such cases can cause, but very rarely. The reason for headache and the blood shot eye on one side can be due to increased blood pressure. I would advise you the following to be done urgently:Consult in ER for the clinical evaluation including for the vitals, actual physical examination and investigations like upper GI Endoscopy, CT or MRI of the abdomen for pancreatitis and aorta. I am sure this will help you to get a proper diagnosis and treatment. </s>