Interstitial granulomatous dermatitis and arthritis (IGDA); and palisaded neutrophilic granulomatous dermatitis (PNGD)

Question 1

IGDA and PNGD are a/w _____

Answer 1

systemic diseases

- SLE (PNGD > IGDA)

• RA (both)
• other autoimmune diseases

Question 2

What is the basic pathogenesis of IGDA and PNGD?

Answer 2

autoimmune condition leads to chronic low intensity vasculitis leading to palisaded granulomatous inflammation

Question 3

Treatment of IGDA/PNGD:

Answer 3

treat underlying disease (SLE, RA, other autoimmune diseases)

• can also use topical or intralesional CS