1-Lobular
a-With vasculitis
b-Without vasculitis
2-With needle-shaped clefts
3-Septal
a-Erythema nodosum
b-A1AT-deficiency-associated
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1-Lobular Panniculitis
a-With vasculitis; Erythema induratum, “Bazin disease”
b-Without vasculitis
Cytophagic histiocytic panniculitis
Traumatic panniculitis
Cold panniculitis
Gouty panniculitis
Pancreatic panniculitis
Factitial panniculitis
2-With needle-shaped clefts Panniculitis
Lipodermatosclerosis
Chronic venous insufficiency
Subcutaneous fat necrosis of the newborn
Sclerema neonatorum
Weber–Christian disease
Lupus erythematosus panniculitis
High doses of systemic corticosteroids
3-Septal Panniculitis
Erythema nodosum
A1AT-deficiency-associated