Consider All Differential Diagnoses in Dermatologic Cases

In diagnosing dermatologic cases, it is crucial to consider a wide range of differential diagnoses including infectious diseases like Rocky Mountain spotted fever, malignancies such as cutaneous manifestations of tumors and autoimmune conditions like vasculitis or lupus. The time course and evolution of symptoms help in narrowing down the possibilities, with drug eruption being the initial differential but other red flags necessitating a broader evaluation. It is essential to delve into the patient's medical history and physical exam details to gain a comprehensive understanding of the case.