a friend of has brain cancer. he had an mri with contrast on tuesday and i believe it has an allergic reaction. he has taken morphine and xanax. he has been totally out of it all night. his blood pressure is 92/55 and 92/61. i am not sure if that is too low and i should take him to the hospital. can you advise
Thanks for your question on Chat Doctor. Brain tumor are very notorious in presentation and also in response to treatment. They can rapidly grow in brain and compress the surrounding structures. They also cause edema in the brain and cause high intracranial pressure (ICP). Due to this blood supply of brain is hampered and patient looses consciousness and talks irrelevant. So your friend may have all above consequences. So immediately take him to the hospital.  He needs urgent MRI to rule out brain edema and compression. He may need operation too, to decrease ICP.