This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infections of the genital tract, Subject name: Gynaecology & Obstetrics
Vulval candidiasis is associated with : 
Select and explain. 
A. Addison disease, B. Cushing disease, C. Diabetes mellitus, D. Acromegaly
C: Diabetes mellitus
Answer: C: Diabetes mellitus 
Explanation: Predisposing factors Diabetes: Increased glycogen in cells leading to increased lactic acid and acidic PH Pregnancy: Increased vaginal acidity Broad spectrum antibiotics Combined oral pills Immunosupression HIV Steroids Thyroid and Parathyroid disease Obesity Ref: Shaw Gynecology 17 e pg 330.