hi Welcome to HCM i had gone through your father s history and i can understand your concern towards your dad Madavi, Candidiasis is a fungal infection caused by yeasts from the genus Candida. Candida albicans is the predominant cause of the disease. Esophageal candidiasis Patients with esophageal candidiasis may be asymptomatic or may have 1 or more of the following symptoms: Normal oral mucosa ( 50% of patients) Dysphagia Odynophagia Retrosternal pain Epigastric pain Nausea and vomiting Treatment 1 Esophagial Candidiasis requires systemic therapy with fluconazole for 14- 21 days. 2 Parenteral therapy with fluconazole may be required initially if the patient is unable to take oral medications. 3 Daily suppressive antifungal therapy with fluconazole 100-200 mg/d is effective for preventing recurrent episodes, but it should be used only if the recurrences become frequent or are associated with malnutrition due to poor oral intake and wasting syndrome. 4 Recommended alternatives for fluconazole-refractory disease include itraconazole, voriconazole, caspofungin, micafungin, anidulafungin, and amphotericin B. I hope i have cleared your query thank you take care