Thanks for your question on HCM.
In my opinion you should first
consult pulmonologist and get done chest x ray and Broncho scopy to rule out any pathology of throat.
The pain mostly from GERD only. And
smoking has deteriorated effect on GERD. It actually worsens GERD.
So if chest x ray and
Bronchoscopy is normal than no need to worry about
throat cancer. His symptoms are mostly due to GERD.
So cessation of smoking is needed in his case. Along with these do following things for better control of GERD.
1. Avoid oily and spicy food.
2. Avoid heavy meals, instead take small meals.
3. Avoid stress and tension.
4. Start
proton pump inhibitor.
5. Go for walk after meals.
6. Keep 2-3 pillows under head in bed.