My father is 63 years old and facing problem of acidity since last 7 months. He has been diagnosed with antral gastritis in 2018 but he recovered from that. That time he took pan 40. Now his acidity is getting worse day by day and he is not willing to eat anything. He is diabetic and use metformin 500. He has neuropathy also. He is on medication like s votica and alzolam 0.5. He tried several antacids but nothing works. He is now using pan 80 for two days but it is not working. Please please help. Is it something very serious or cancerous? His cbc, lft, hba1c, upper abdomen usg report is normal.