Thank you for the query.
Such symptoms may be caused by peptic ulcer
. Especially if such symptoms appear about 2 hours after meal. It is very common that peptic ulcer gives negative ultrasound
and CT results as well as blood work is usually normal. That is why upper GI endoscopy
with Helicobacter Pylori
test should be performed. Before that fool blood work and abdominal ultrasound should be done again, as a lot could have changed during this year.
If your friend will find all this tests negative including endoscopy, stool tests should be performed as such symptoms may be also caused by some intestines infection. That is why he should ask his doctor about Rifaximine therapy.
Hope this will help.