Thanks for your question on HCM.
I can understand your mother 's situation and problem.
In my opinion she is having
acute gastritis.
Chemotherapy drugs are known to cause acute gastritis. It is inflammation of
gastric mucosa due to drugs. So patient feels burning pain,
nausea, abdomen fullness, early satity etc.
She needs to follow these things for better symptomatic relief.
1. Avoid stress and tension.
2. Avoid hot and spicy food.
3. Avoid large meals, instead take frequent small meals.
4. Start
proton pump inhibitors and pro kinetic drugs.
If she is not improving by all these, consult your doctor.