HESI Inflammatory Bowel Disease Case Study Practice Test 2026 – Comprehensive All-in-One Guide for Exam Mastery!

Inflammatory bowel disease can show skin findings that help tell two common conditions apart: erythema nodosum and pyoderma gangrenosum. The key distinction is the nature of the skin lesion and how it behaves with the disease. Erythema nodosum presents as tender red nodules under the skin, most often on the shins. Pyoderma gangrenosum, on the other hand, shows up as a painful ulcerative skin lesion with rapidly enlarging ulcers that can have undermined, violaceous borders, and these ulcers often accompany IBD and can flare with intestinal activity. So, erythema nodosum is nodular, usually on the shins, and not ulcerative, whereas pyoderma gangrenosum is ulcerative and painful and tends to worsen during flares. The other statements contradict these characteristic features: ulcers on legs describe PG rather than EN; nodules on arms don’t fit the typical PG presentation; and EN and PG are not identical in presentation.