Definition of Terms and Anatomy

The subcutaneous fat (panniculus adiposus) is located below the reticular dermis and extends to the superficial fascia. The tissue is divided into lobules composed of aggregates of adi-pocytes (fat cells, lipocytes) separated by a meshwork of fibrous septae (trabeculae). The fibrous septae extend down from the reticular dermis and house small- to medium-sized arteries, arterioles, venules, lymphatics, and nerves. An arteriole supplies the center of each lobule with drainage to peripheral venules in the fibrous septae. Lymphatics are not present within the lobules. Each adipocyte is supplied by capillaries. Therefore, venous processes are

Septal

Erythema nodosum

Erythema nodosum migrans/ subacute nodular migratory panniculitis

Lobular

Sclerema neonatorum

Subcutaneous fat necrosis of the newborn

Poststeroid panniculitis

Cold panniculitis

Foreign body/factitial panniculitis

Cytophagic histiocytic panniculitis (+septal)

Pancreatic fat necrosis ( + septal)

Neutrophilic panniculitis/ subcutaneous Sweet's syndrome

Weber-Christian disease

Combined

Septal/

Lobular

Nodular vasculitis/ erythema induratum

Lupus erythematosus profundus/connective tissue panniculitis

Secondary Panniculitis:

See Table 1.

150 Robinson-Bostom Table 1 Secondary Panniculitis

Vascular Disease

Fibrosing Disease

Infections

Malignancy

Miscellaneous

Leukocytoclastic vasculitis begins as septal process and becomes lobular (septal ! lobular)

Morphea / scleroderma (septal— lobular)

Fungal (lobular + septal)

Lymphoma (lobular — septal)

Subcutaneous granuloma annulare (septal)

Polyarteritis nodosa (septal)

Eosinophilic fasciitis (septal)

Bacterial (lobular + septal)

Subcutaneous panniculitis like T cell lymphoma (lobular — septal)

Rheumatoid nodule (septal)

Thrombophlebitis (septal)

Nephrogenic fibrosing dermopathy (septal)

Viral (lobular + septal)

Atypical lymphocytic panni-culitis (lobular)

Necrobiotic xanthogranu-loma (septal)

Lipodermatosclerosis / sclerosing panniculitis, lipomembranous panniculitis (septal 1 lobular)

How To Deal With Rosacea and Eczema

How To Deal With Rosacea and Eczema

Rosacea and Eczema are two skin conditions that are fairly commonly found throughout the world. Each of them is characterized by different features, and can be both discomfiting as well as result in undesirable appearance features. In a nutshell, theyre problems that many would want to deal with.

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