[Atypical hemolytic uremic syndrome: differential diagnosis and therapy - A clinical practice guideline for diagnosis and therapy].

Atypical hemolytic uremic syndrome (aHUS) is an important differential diagnosis in thrombotic microangiopathy (TMA). The absence of definitive biomarkers usually allows for aHUS to be diagnosed only through a process of exclusion. Due to the unfavorable prognosis if adequate therapy is delayed or not provided, differential diagnostic considerations and initiation of treatment must occur promptly. The presented guideline is intended to serve as an aid in this process.