A nursing student who has a high percentage of absenteeism frequently visits the health center...

The student is most likely suffering from hypochondriasis, which is now referred to as illness anxiety disorder in the DSM-5. This condition is characterized by an excessive preoccupation with having a serious illness despite medical reassurance and the absence of significant medical findings. The keyfeatures in this scenario are the student's high absenteeism, frequent complaints of gastrointestinal symptoms, and persistent belief in having a terminal illness despite normal test results. Hypochondriasis involves misinterpreting normal bodily sensations as signs of severe illness and seeking repeated medical evaluations.