Hi, thanks for the query to H C M Forum.
I would like to say one thing clearly that your's brother is not a mental case or mental problem.
Treat him as a brother and every things and problems as far as related to diseases would be solved within short time.
Anxiety neurosis is a disease in which there is hyper acidity, gastritis
, sore mouth, nausea , loss of appetite, heart burn ( burning sensation in esophagus
At the beginning your's brother were a patient of anxiety and later this condition worsen and develops many problems as you mentioned in your query.
Gastroscopy were performed of your's brother but not find any thing, so I want to make you clear that this thing will not reveal in this test.
Now please consult a psychiatrist
and take his advice.
Consult a physician and get in treatment of Hyper acidity.
100 mg 2-2-2
with antacid (oxetacain)
Above mentioned treatment is very very effective in many cases and you can try at your brother.
Take a consultation of doctor. Regards.