Jessica, a 20-year-old woman, has always been self-conscious about her appearance. She spends hours in front of the mirror daily, scrutinising her face and body for imperfections. Jessica is convinced she has a big stomach, small breasts, and a big nose. She has tried every beauty product and surgical procedure to fix these perceived flaws, but according to her, these did not work. Jessica is becoming increasingly isolated and depressed. Her friends have tried to reassure her that she looks beautiful and that they cannot notice these perceived flaws. A psychologist will probably make the principal diagnosis of - - - - -.