Specific conditions involving the leg
Blue-Black Minocycline pigmentation
Enlarged Elephantiasis Nostras,Hereditary lymphedema,Klippel-Trenaunay syndrome
Eschar Ecthyma gangrenosum,Anthrax,Lymphomatoid papulosis,Mucha-Habermann disease (PLEVA)
Hyperkeratotic Papule Large cell acanthoma,Lichen spinulosus
Linear ILVEN,Lichen striatus,Incontinentia pigmenti,Linear porokeratosis,Linear scleroderma,Superficial Thrombophlebitis,Bleomycin rash,Linear Darier's
Lipoatrophy Circumscribed lipoatrophy
Necrosis Henoch-Schonlein Purpura,Pityriasis lichenoides(PLEVA),Ecthyma,Factitial
Nodules Fascial hernias,Dermatofibroma,Keratoacanthoma
Papules Flat warts,Kyrle's Disease,Majocchi's granuloma
Pedunculated Dermatofibroma
Pigmented Dermatofibroma,Erythema ab igne (reticulate),Lichen amyloidosis,Melanoma
Purpura nonpalpable Lichen aureus,Progressive pigmentary dermatosis,Purpura annularis telangiectoides
Purpura palpable Hypergammaglobulinemic purpura,Hypersensitivity vasculitis,Polyarteritis nodosa,Wegener's granulomatosis
Pustules Folliculitis
Red scaly Asteatotic eczema,Bowen's diseaseT cell lymphoma,Nummular eczema,Stasis dermatitis,Tinea corporis,Hypertrophic lichen planus,Porokeratoses
Reticulated Cutis marmorata,Cutis marmorata telangiectasia,Levido reticularis,Sneddon's syndrome
Ridge Disseminated superficial actinic porokeratosis
Skin coloured and scaly X linked Ichthyosis (fish like scales)
Swelling Lymphedema,Milroy's disease,Klippel Trenaunay Syndrome
Target Erythema multiforme
Telangiectasias Arborizing telangiectasia
Ulcers Ateriosclerosis obliterans,Antiphospholipid syndrome,Factitial,Klinefelter's syndrome,Malignancy,Necrobiosis lipoidica,Prolidase deficiency,Pyoderma gangrenosum,Rheumatoid arthritis,Sarcoidosis,Stasis ulcer,Vasculitis (See Advanced Differential diagnosis page for others)
Vascular Varicose veins
White Idiopathic guttate hypomelanosis
Xerosis Xerosis
Yellow Buschke-Ollendorff syndrome (dermatofibrosis lenticularis disseminata)
Modified from Regional Dermatology Gary M White