This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Major Depression, Subject name: Psychiatry
In clinical practice, most common psychiatric illness seen is: 
Select and explain. 
A. Maniac disorder, B. Schizophrenia, C. Depressive disorder, D. Bipolar disorder
C: Depressive disorder
Answer: C: Depressive disorder 
Explanation: Ans. (c) Depressive disorderRef. Kaplan synopsis 10thed./ 528-30* Most common psychiatric disorder in India and worldwide: Major depression* Female is most commonly affected as compared to males* Depression is the most common psychiatric disorder associated with severe medical illness like hypothyroidism, cancer, AIDS, post MI etc.