Complex Medical Dermatology: Clinicopathologic Correlation

In a recent clinicopathologic discussion, a dermatologist presented case studies focusing on complex medical dermatology, particularly mucocutaneous eruptions. The first case highlighted a 32-year-old woman with a painful desquamative rash that evolved over a week, leading to severe symptoms including fever and conjunctival injection. Clinical examination revealed erosive plaques and significant laboratory findings indicated leukopenia, anemia, and acute kidney injury. A punch biopsy showed signs consistent with connective tissue disease, ultimately diagnosing her with acute cutaneous lupus. Treatment involved high-dose IV steroids, and the patient responded well despite some residual skin disease. The second case involved a 57-year-old man undergoing treatment for colorectal cancer, who developed a progression of a rash and oral mucositis following chemotherapy. He presented with notable erythema and mucositis, and a biopsy indicated toxic erythema due to chemotherapy. Notably, the use of high-dose vitamin D was discussed as a therapeutic approach, showing promise in reducing inflammation associated with chemotherapy. The dermatologist emphasized clinical pearls for care, including recognizing the adverse effects of treatment methods and the importance of preventive strategies during chemotherapy.