II. Definitions
III. Differential Diagnosis: Erosion
- Dermatophyte infection or Candidiasis
- Eczematous Dermatitis
- Herpes Simplex Virus
- Intertrigo
- Excoriations (include Neurotic Excoriations)
- Aging Skin
- Toxic Epidermal Necrolysis
- Vesicles and Bullae
IV. Differential Diagnosis: Ulceration
- See Oral Ulcer
- See Genital Ulcer
- External Skin Injury
- Skin Trauma
- Skin picking
- Envenomation (e.g. Brown Recluse Spider Bite)
- Decubitus Ulcer
-
Bacterial Skin Infection
- Streptococcus (e.g. Ecthyma)
- Staphylococcus (e.g. Impetigo)
- Pseudomonas
- Treponema pallidum (Syphilis)
- Mycobacterium ulcerans (Buruli Ulcer)
- Haemophilus ducreyi (Chancroid)
- Cutaneous Mycobacterium tuberculosis
- Viral Skin Infections
- Herpes Simplex Virus Type 2
- Coxsachievirus
- Deep Fungal Skin Infections
- Coccidiomycosis
- Mucormycosis
- Sporotrichosis
- Aspergillosis
- Cryptococcosis
- Zygomycosis
- Penicillium marneffei
- Parasitic Skin Infections
- Medium or Small Vessel Vasculitis
- Polyarteritis Nodosa
- Microangiopathic Vasculitis
- Granulomatosis with Polyangiitis (previously known as Wegener's Granulomatosis)
- Rheumatoid Arthritis
- Takayasu Arteritis
- Necrobiosis Lipoidica (associated with Diabetes Mellitus)
- Leukocytoclastic Vasculitis (secondary to infection)
- Vascular insufficiency
- Arterial Insufficiency
- Venous Stasis Ulcer
- Antiphospholipid Antibody Syndrome
- Type I Cryoglobulinemia
- Klippel-Trenaunay-Weber Syndrome
- Livdeoid Vasculopathy
- Skin Neoplasm
- Non-melanoma Skin Cancer (Basal Cell Skin Cancer, Squamous Cell Skin Cancer)
- Leukemia Cutis
- Langerhans Cell Histiocytosis
- Lymphoma
- Angiocentric T-Cell Lymphoma
- Anaplastic Large Cell T-Cell Lymphoma
- Mycosis Fungoides bullosa
- Medications
- Hydroxyurea
- Contact Dermatitis
- Superinfected Injection Drug Abuse
- Bromoderma
- Drug-induced Lupus
- Miscellaneous Causes
- Pyoderma Gangrenosum (Neutrophilic dematosis)
- Cutaneous Crohn's Disease
- Brown Recluse Spider Bite (Loxoscelism)
V. References
- Jhun and DeClerck in Herbert (2015) EM:Rap 15(8): 19-20
- Weenig (2002) N Engl J Med 347(18):1412-8 +PMID: 12409543 [PubMed]