Nervous System/Brain Disorders?!

It takes some time to correctly diagnose brain disorders. His doctor may not know yet what the problem is. This doesn't sound like a disorder but with a Cat Scan of his brain it will show if there is any damage and what can be done to help him. You sound like a very kind daughter-in-law and try to be patient. They will find out what is wrong and how to help him.

your brother in-law could be suffering from anxiety disorder, because this type of condition can cause,dizziness,shakines,fainting,slurre… of speech and also vomiting, but im not to sure. Having this issue means many things, when someone is vomiting and going through these conditoions can mean they are not taking well cared of themselves, becuase my friend went through this issue and its because she was taking pills that caused her to get dizzy, she began to take them without anyones permission and it got to the point where, she got the same issue as your brother in-law is going though.It can also mean that maybe, he is not eating right and your system needs food, because if it doesn't have food your body will react to these issues and cause your body to go in shock.your brain and system can definitely cause these issues, also the heart can cause these issues as well. look it up on ask.com you might get the right answer your looking for there.