blood vomits, pure blood....ecg,chest xray, stomach sonography clear, even endosocpy is good....no problems seens anywere.....doctor started gastic based treatments like pantocid,ganaton,cinod,telma,sacro gel....all injections along with insulin and tab as diabetic and bp patient... regular bp,diebetic medicines were on.....no burning sensation in stomach or anywhere....sylate injections to stop bleeding and terlipressin injection(terlistat) 1mg * 4 were given....now all ok....endoscopy were clear but doctor said likely its hiatus hernia?.....want to know the precise reason and cause of the same and how to avoid such things in future