Severe oesophagitis with ulcers and suspected candidiasis usually indicates that the oesophageal lining is irritated and has a fungal infection. This often happens when local immunity is low, after prolonged acid exposure, or due to medicines that affect the body?s natural balance. The symptoms you feel can be due to both acid damage and infection. Looking at your medicines, anti-allergy tablets are not commonly known to cause oesophageal ulcers. Calcitonin spray is also not directly linked to causing such ulcers, but any long-term medicine can sometimes cause dryness or irritation that may indirectly worsen discomfort. The more likely reason for candidiasis is factors such as acid damage, reduced immunity, or prolonged irritation, rather than these medicines alone. Since your symptoms are severe and not improving, it is important to get a proper review. Your doctor may need to confirm the infection and give specific treatment only if required after evaluation, especially for the fungal part. Meanwhile, avoid spicy, hot, and acidic foods, eat soft meals, and do not lie down soon after eating. If pain, difficulty swallowing, or symptoms worsen, seek medical care promptly for better management.