Sir it can be acquired due to persistant acidity looking at your age.
There are many other causes of this problem like hiatus hernia, oesophageal reflux disease etc.
Basically this problem occurs due to increased pitta. You need to follow diet until you start the right and proper treatment.
You can consult with your reports.
Next Steps
consultion is needed.
as it has complications if long term disease.
Health Tips
include cow ghee 4 spoons daily in your diet.
do not ea tg hot or spicy food.
moong dal is best diet until sympts reduce.
include kokum syrup daily .
sleep on time.
do meditation for overthinking or irritation.