# Cracking the code: high ferritin load with Salmon-Colored skin episodes

## TL;DR

A 37-year-old man with a salmon-colored rash and high ferritin levels was diagnosed with Adult-onset Still’s Disease after ruling out other conditions.

## Contribution

The case highlights the diagnostic process of AOSD and the potential role of AI in dermatologic assessments.

## Key findings

- Elevated ferritin levels raised suspicion for Hemophagocytic Lymphohistiocytosis, but it was ruled out.
- Corticosteroid treatment led to significant clinical improvement in the patient.
- A skin biopsy was non-specific, emphasizing the challenge in diagnosing AOSD.

## Abstract

A 37-year-old previously healthy male presented to the Emergency Department with a two-week history of intermittent fevers, joint pain, sore throat, and a diffuse salmon-colored rash. Examination revealed a pruritic rash with joint swelling and red spots in the oropharynx. Initial sepsis management was instituted, but subsequent investigations, including infectious, hematologic, and autoimmune workups, were inconclusive. Notably, elevated ferritin levels prompted consideration of life-threatening conditions like Hemophagocytic Lymphohistiocytosis, which was ultimately ruled out. Adult-onset Still’s Disease (AOSD) emerged as the leading diagnosis following the exclusion of other potential causes. A skin biopsy was performed with non-specific findings and corticosteroid treatment led to significant improvement. This case illustrates the clinical decision-making process of diagnosing AOSD and highlights the potential utility of novel AI technology in dermatologic assessments.