Hello dear, thanks for your question on HCM.
I can understand your boyfriend 's situation and problem.
In my opinion, he is having GERD (
gastroesophageal reflux disease) due to
smoking and poor eating habits.
But better to rule out cardiac cause first for his left sided
chest pain.
So get done ecg. If ecg is normal then no need to worry for cardiac cause.
He is having GERD mostly.
It is due to laxity of gastroesophageal sphincter.
Because of this, the acid of the stomach tends to come up in the
esophagus and cause the symptoms of burning and stabing chest pain.
Smoking further damages the sphincter.
So first of all ask him to quit smoking.
Avoid stress and tension. Avoid hot and spicy food. Avoid large meals, instead take frequent small meals. Start
proton pump inhibitors.
Don't worry, he will be alright.