Pannincitis

Subcutaneous fat has Lobular and septal parts. Inflammation of fat is panniculitis
LOBULAR PANNICULITIS:
a) with vasculitis:
- Erythema nodosum leprosum
- Erythema induratum of bazins (it is a type of tuberculid)
b) without vasculitis
- Subcutaneous fat necrosis of newborn
- Alpha-1 anti trypsin deficiency
- Pancreatic panniculitis
- Sclerema neonatorum
- Post steroid panniculitis
- lipodermatosclerosis
- Lupus panniculitis

SEPTAL PANNICULITIS
a) without vasculitis
- Erythema nodosum
- Necrobiosis lipoidica
- Rheumatoid nodule
b) with vasculitis
- Cutaneous polyarteritis nodosa