VasculitisChurg-Strauss SyndromeMicroscopic PolyangiitisNautilusWegener GranulomatosisArteritisSalpingitisPerinephritisSkin Diseases, VascularSystemic VasculitisSterilization ReversalPulse Therapy, DrugPlasma ExchangeGangreneAntibodies, Antineutrophil CytoplasmicVasculitis, Leukocytoclastic, CutaneousInfarctionAneurysmHepatic ArteryCryoglobulinemiaSkin DiseasesFatal OutcomePrednisolonePolyarteritis NodosaLeuprolideTomography, X-Ray ComputedCyclophosphamideImmunosuppressive AgentsTreatment OutcomeKidneyFollow-Up StudiesProspective StudiesHairLiterature, ModernHistory, 19th CenturyHair Follicle