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Deep skin disorders

Skin diseases involving or infiltrate the dermis (deepest layer of skin) or subcutis (layer of fat under the skin) include:

Structural diseases

Actinic granuloma
Amyloidosis
Anetoderma
Cellulitis
Connective tissue naevi
Skin lax
Dermatofibroma
Dermatofibrosarcoma protuberans
Dupuytren contracture
Ehlers Danlos syndrome
Elastosis
Serpiginous perforating elastosis
Fibromatosis
Keloids and hypertrophic scars
Knuckles
Infectious panniculitis
Leiomyoma
Leiomyomatosis and renal cell Cancer syndrome
Lipodystrophy
Lipoedema
Lipoid proteinosis
Lipoma
Mastocytoma
Medium-dermal elastolysis
Nephrogenic fibrosing dermopathy
Neurofibroma
Elastic pseudoxanthoma
Solar elastosis
Reactive perforating collagenosis
Stretch marks

Inflammatory infiltrations

Cutaneous Cell B lymphoma
Cutaneous T cell lymphoma
Cytophagic histiocytic panniculitis
Eosinophilic skin disease of hematological malignancy
Eosinophilic fasciitis
Erythema knotty
Histiocytosis
Jessner lymphocytic infiltrate
Idiopathic nodular panniculitis
Langerhans cell histiocytosis
Lymphocytoma cutis
Lymphomatoid papulosis
Mastocytosis
Morph
Non-Langerhans cell histiocytosis
Panniculitis
Pseudolymphoma
Recurrent polychondritis
Reticulohistiocytosis
Sweet disease
Systemic sclerosis

Granulomas

Atypical mycobacteria infection
Cutaneous tuberculosis
Facial granuloma
Granuloma annulare
Granulomatous dermatitis
Leprosy
Pyogenic granuloma
Sarcoidosis
Neonatal sclerema
Subcutaneous grease necrosis of the newborn

Diverse

Leukemia skin
Evil one histiocytosis
Osteoma skin
Benign lymphoplasmacytic license plate