Brief Answer:
probably GERD

Detailed Answer:
Hello,

this symptom is very commonly caused by GERD (gastro-esophageal reflux disease) or peptic ulcer. GERD is more likely when the patient has regurgitation of stomach contents into the esophagus (and sometimes up to the mouth) which tastes sour and burns behind the chest. Peptic ulcer usually causes burning pain to the upper abdomen. Other disorders that may confuse the doctor include gallbladder disorders, which typically cause pain in the right upper abdominal quadrant. Dyspepsia refers to a syndrome of similar symptoms that have no identifiable cause.

The investigation should start with an upper gastrointestinal endoscopy which should clarify this issue. Esophagitis (the result of GERD), peptic ulcer or other causes may be identified. An upper abdominal ultrasound scan may help with the gallbladder disorders.

Tums and zantac are good for burning symptoms. Proton pump inhibitors like omeprazole are better...

I hope it helps!
Kind Regards!

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