Primary finding in vasculitis
inflammation within blood vessel walls
What arteries does Polyarteritis Nodosa affect?
medium-sized
spares arterioles, venules, capillaries
Polyarteritis Nodosa is associated with…
Hep B (30% of patients)
Polyarteritis Nodosa: epidemiology
slight male predominance
Polyarteritis Nodosa: Clinical Manifestations
Polyarteritis Nodosa: lab findings
↑ESR, ↑CRP, hematuria, ↑creatinine
Cutaneous Polyarteritis Nodosum is associated with…
Hep C
How is Buerger’s Disease characterized?
Granulomatous inflammation, which predominantly affects vascular supply to the lower limbs
Buerger’s Disease: epidemiology
young adult M, tobacco smokers
Which CT disorders can be associated with IC-mediated vasculitis?
SLE, Sjögren’s syndrome, and RA
What is the most prominent feature in Immune Complex-Mediated Small Vessel Vasculitis?
Cutaneous involvement of small blood vessels
What is the classic cutaneous symptom associated with Immune Complex-Mediated Small Vessel Vasculitis?
palpable purpura
pustules, vesicles, urticaria, small ulcerations may also be found
Hypersensitivity Vasculitis usually occurs secondary to…
drug exposures or infections
How is Hypersensitivity Vasculitis characterized?
IC deposition in capillaries, postcapillary venules and arterioles
Clinical manifestations of Hypersensitivity Vasculitis?
Henoch-Schonlein Purpura: epidemiology
90% in children
What vessels does Henoch-Schonlein Purpura affect?
small vessels, primarily postcapillary venules
What is characteristically present in Henoch-Schonlein Purpura?
IgA
Henoch-Schonlein Purpura: classic tetrad
purpura, arthritis, abdominal pain, GN
Henoch-Schonlein Purpura: lab findings
↑ESR, ↑CRP, hematuria, ↑creatinine, RBC casts present (if renal involvement)
Cryoglobulinemia Vasculitis is most often associated with…
long-standing hep C infection
How are types II/III of Cryoglobulinemia Vasculitis different than type I?
IgM and IgG (polyclonal)
associated with hep C, Sjogrens, SLE
result in IC-mediated vasculitis
Cryoglobulinemia Vasculitis: clinical manifestations
Cryoglobulinemia Vasculitis: lab findings
↑ESR, ↓C4, (+) RF