Arrhythmogenic Cardiomyopathy (ACM) is characterized by progressive fibrofatty replacement, predisposing to ventricular arrhythmias and sudden cardiac death. A distinct manifestation, particularly in Desmoplakin (DSP) mutation carriers, is the acute, inflammatory "hot phase," which can mimic myocarditis and accelerate structural remodelling. We report the case of a 28-year-old woman with…