<prompt> In clinical practice, most common psychiatric illness seen is:Maniac disorderSchizophreniaDepressive disorderBipolar disorder  <response>: 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. 