Thanks for posting your query.
Does he has acidic belching/ abdominal discomfort/ gargling sound in abdomen/ abdominal bloating
after taking meals?
Does he have retrosternal burning pain causing difficulty in swallowing?
Does he has fever/ spasmodic abdominal pain?
Is he alcoholic also?
Does this pain increase on eating food?
With the available describes symptoms, there could be possibility of peptic ulcer
disease/ pancreatitis/ left lower chest pathology or splenic flexure pathology.
He should consult with internal medicine specialist/ gastroenterologist and should go for thorough check up.
He should also go for complete blood count
imaging abdomen, thyroid profile, blood sugar, x ray abdomen and serum electrolytes.
Meanwhile, He should take proton pump
inhibitors along with prokinetics for relief of your symptoms.
He should also take tramadol for relief of your symptoms.
Avoid oily and spicy food, tomatoes, citrus fruits, excessive tea & coffee, chocolates.
Take soft diet along with yogurt.
Dr. Mayank Bhargava