Justin has several nursing diagnoses including imbalanced nutrition due to insufficient calorie intake from anorexia and nausea preventing him from meeting his metabolic demands. He is also at risk for deficient fluid volume from vomiting and diarrhea causing excessive fluid losses. Additionally, Justin experiences fatigue likely from decreased energy production and discomfort from his condition, as well as impaired skin integrity due to bile salt accumulation in his tissues causing irritation. Lastly, Justin has deficient knowledge about his condition which nurses can address by providing education and resources.