Pythiosis presenting with digital gangrene and subcutaneous nodules mimicking medium vessel vasculitis

Pythiosis is an infectious disease caused by microorganisms of the Pythium genus, a form of funguslike oomycetes living in water-rich habitats. Human pythiosis is an emerging disease with a high rate of morbidity and mortality. Early recognition and management is crucial for successful treatment and outcomes. Because identifying the pathogen can be challenging, pythiosis might be easily misdiagnosed. Here we report a case of vascular pythiosis, the manifestation of which mimics medium-sized vasculitis.