Subacute nodular migratory panniculitis
No definitive cause of SNMP has been identified, and the majority of cases appear to be idiopathic. Some case reports have suggested infectious etiologies (particularly streptococcal pharyngitis) and predisposing thyroid disease.
M79.3 – Panniculitis, unspecified
76097009 – Erythema nodosum migrans
- Erythema nodosum – Tender bilateral, symmetric, self-limited nodules, usually preceded by an identifiable infection, autoinflammatory condition, or medication.
- Nodular vasculitis (erythema induratum)
- Pancreatic panniculitis
- Alpha-1 antitrypsin deficiency panniculitis
- Lupus panniculitis – Tender plaques and nodules most commonly affect the upper body of patients with systemic lupus erythematosus.
- Cytophagic histiocytic panniculitis – Nodules tend to ulcerate and drain, and biopsy reveals lobular panniculitis with "beanbag" cells.
- Lipodermatosclerosis – Signs and symptoms of venous insufficiency, including varicose veins, edema, and atrophic skin.
- Subcutaneous panniculitis-like T-cell lymphoma – Skin lesions may be almost identical to SNMP, but immunohistochemical studies will reveal neoplastic T-cells.
- Polyarteritis nodosa – Lower extremity nodules are commonly associated with livedo reticularis. Biopsy reveals medium-vessel vasculitis and inflammation limited to the perivascular zones.
- Necrobiosis lipoidica
- Subcutaneous granuloma annulare
- Rheumatoid nodule – Nontender nodules located on extensor and pressure surfaces of patients with rheumatoid arthritis.
- Superficial migratory thrombophlebitis – Tender nodules develop along course of a vein with associated thrombosis.
- Arthropod bites