Interstitial Granulomatous Dermatitis & Arthritis (IGDA) & Palisaded Neutrophilic Granulomatous Dermatitis (PGND) Flashcards
1
Q
IGDA is on a spectrum with what other disease?
A
PNGD and vice versa
2
Q
What is the best screening test?
A
ANA
3
Q
path
A
immune deposition in/around dermal vessel walls, granulomatous inflammation in reaction to degenerated collagen
4
Q
tx
A
treat underlying disease (often other AI disease); may try topical/intralesional steroids
5
Q
prognosis
A
2/3 of patients will have disease remission, while 1/3 will have persistent disease
6
Q
What are IGDA and PNGD a/w ?
A
SLE and ANCA vasculitides (PNGD>IGDA)
RA and other AI diseases (both)
7
Q
clinical findings IGDA
A
annular red-violaceous plaques on trunk and intertriginous areas with “rope sign”
8
Q
clinical findings PNGD
A
symmetrically distributed eroded, umbilicate papules overlying joints
