Integument Normal Histology
Epidermis (Including Keratinocytes and Melanocytes)
Dermis
Adnexal Structures
Nail
Spongiotic and Psoriasiform Dermatoses
Atopic Dermatitis
Contact Dermatitis
Nummular Eczema
Asteatotic Eczema
Dyshidrotic Eczema
Id Reaction
Seborrheic Dermatitis
Pityriasis Rosea
Stasis Dermatitis
Lichen Simplex Chronicus
Prurigo Nodularis
Frictional Keratosis
Psoriasis
Zoon Balanitis
Reactive Arthritis
Parapsoriasis
Lichenoid and Vacuolar Interface Dermatoses
Lichen Planus
Lichenoid Keratosis
Erythema Multiforme and Related Disorders
Pigmented Purpuric Dermatoses
Lichen Sclerosus et Atrophicus
Graft-vs.-Host Disease
Pityriasis Lichenoides
Pityriasis Rubra Pilaris
Erythema Dyschromicum Perstans
Lichen Striatus
Lichen Nitidus
Phytophotodermatitis
Vesiculobullous Dermatoses
Bullous Pemphigoid
Pemphigus and Variants
Dermatitis Herpetiformis
Cicatricial Pemphigoid
Hailey-Hailey Disease
Epidermolysis Bullosa Acquisita
Epidermolysis Bullosa (Inherited)
Linear IgA Bullous Dermatosis
Erythema Toxicum Neonatorum
Transient Neonatal Pustular Melanosis
Acropustulosis of Infancy
Pemphigoid Gestationis
Bullous Diabeticorum
Palmoplantar Pustulosis
Erosive Pustular Dermatosis
Porphyria Cutanea Tarda
Vasculitis, Vasculopathy, and Perivascular Dermatoses
Leukocytoclastic Vasculitis
Granuloma Faciale
Erythema Elevatum Diutinum
Urticaria and Variants
Thrombotic Vasculopathy
Livedoid Vasculopathy
Polyarteritis Nodosa
Gyrate Erythemas
Giant Cell Arteritis
Pruritic Urticarial Papules and Plaques of Pregnancy
Granulomatosis With Polyangiitis
Eosinophilic Granulomatosis With Polyangiitis
Behçet Disease
Malignant Atrophic Papulosis
Livedo Reticularis
Thrombophlebitis
Pernio
Panniculitides
Erythema Nodosum
Lipodermatosclerosis
Traumatic Panniculitis
Eosinophilic Panniculitis
Erythema Induratum
Sclerema Neonatorum
Subcutaneous Fat Necrosis of the Newborn
Post-Steroid Panniculitis
Cold Panniculitis
Pancreatic Panniculitis
Connective Tissue/Soft Tissue Diseases
Keloid
Lupus Erythematosus and Variants
Morphea/Scleroderma
Dermatomyositis
Radiodermatitis
Eosinophilic Fasciitis
Nodular Fasciitis
Pseudoxanthoma Elasticum
Relapsing Polychondritis
Nephrogenic Fibrosing Dermopathy (Nephrogenic Systemic Fibrosis)
Atrophoderma
Favre-Racouchot Syndrome
Collagenous and Elastotic Marginal Plaques of the Hands
Erythema Ab Igne
Anetoderma
Cutis Laxa
Acrokeratoelastoidosis
Middermal Elastolysis
Degenerative and Perforating Diseases
Chondrodermatitis Nodularis Helicis
Perforating Dermatoses
Elephantiasis Nostras Verrucosa
Metabolic/Deposition Diseases
Acanthosis Nigricans
Confluent and Reticulated Papillomatosis
Amyloidosis
Colloid Milium
Calcinosis Cutis
Osteoma Cutis
Gout
Tattoo Ink
Reaction to Cosmetic Fillers
Silicone Reaction
Amalgam Tattoo
Argyria
Minocycline Deposition
Monsel Reaction
Calciphylaxis
Ochronosis
Lipoid Proteinosis
Necrolytic Migratory Erythema
Mucinoses
Focal Cutaneous Mucinosis
Myxedema
Papular Mucinosis
Scleredema
Reticular Erythematous Mucinosis
Mucocele
Cutaneous Myxoma
Follicular Mucinosis
Granulomatous Diseases
Sarcoidosis
Granuloma Annulare
Necrobiosis Lipoidica
Foreign Body Granuloma
Rheumatoid Nodule
Actinic Granuloma
Annular Elastolytic Giant Cell Granuloma
Melkersson-Rosenthal Syndrome
Necrobiotic Xanthogranuloma
Perioral Dermatitis
Lupus Miliaris Disseminatus Faciei
Cutaneous Crohn Disease
Interstitial Granulomatous Dermatitis
Palisaded Neutrophilic Granulomatous Dermatitis
Pilosebaceous Diseases
Folliculitis
Acne
Rosacea
Hidradenitis Suppurativa
Furuncle
Eosinophilic Pustular Folliculitis
Fox-Fordyce Disease
Chloracne
Miliaria
Alopecias
Androgenetic Alopecia
Telogen Effluvium
Trichotillomania
Alopecia Areata
Lichen Planopilaris
Discoid Lupus Alopecia
Central Centrifugal Cicatricial Alopecia
Folliculitis Decalvans
Acne Keloidalis Nuchae
Dissecting Cellulitis
Traction Alopecia
Hair Shaft Disorders
Trichothiodystrophy
Bubble Hair
Pili Torti
Pili Annulati
Trichorrhexis Nodosa
Lice/Nit
Hair Cast
Trichoptilosis
Reactions to Drugs
Cutaneous Reactions to Immune Checkpoint Inhibitors
Morbilliform Drug Reactions
Fixed Drug Eruption
Lichenoid Drug Eruptions
Photodrug Eruptions
Phototoxic Dermatitis
Acute Generalized Exanthematous Pustulosis
Drug Rash With Eosinophilia and Systemic Symptoms
Toxic Erythema of Chemotherapy
Psoriasiform Drug Eruptions
Disorders of Epidermal Maturation and Keratinization
Keratoderma
Grover Disease
Darier Disease
Porokeratosis
Ichthyosis
Epidermolytic Hyperkeratosis
Granular Parakeratosis
Incontinentia Pigmenti
Keratosis Pilaris
Circumscribed Acral Hypokeratosis
ILVEN
Disorders of Pigmentation
Vitiligo
Postinflammatory Pigment Alteration
Pityriasis Alba
Becker Nevus
Melasma
Idiopathic Guttate Hypomelanosis
Dowling-Degos Disease
Neutrophilic Dermatoses
Sweet Syndrome
Pyoderma Gangrenosum
Subcorneal Pustular Dermatosis
Neutrophilic Eccrine Hidradenitis
Nutritional Deficiencies
Necrolytic Acral Erythema
Pellagra
Scurvy
Acrodermatitis Enteropathica
Photosensitivity Dermatoses
Polymorphous Light Eruption
Chronic Actinic Dermatitis
Hydroa Vacciniforme
Bacterial Infections
Impetigo
Cellulitis
Necrotizing Fasciitis
Ecthyma Gangrenosum
Staphylococcal Scalded Skin Syndrome
Lyme Disease and Its Manifestations
Tuberculosis
Atypical Mycobacterial Infections
Leprosy
Cat Scratch Disease/Bacillary Angiomatosis
Nocardiosis and Actinomycosis
Rocky Mountain Spotted Fever
Rhinoscleroma
Ecthyma
Erythrasma
Cutaneous Malakoplakia
Botryomycosis
Spirochetal Diseases
Syphilis
Pinta
Yaws
Endemic Syphilis (Bejel)
Viral Infections
Gianotti-Crosti Syndrome
Viral Exanthem
Cutaneous Manifestations of COVID-19
Herpesvirus
Varicella/Herpes Zoster
Molluscum contagiosum
Epstein-Barr Virus Infections
Cytomegalovirus
Orf and Milker's Nodule
Hand, Foot, and Mouth Disease
Measles
Fungal Infections
Dermatophytosis
Majocchi Granuloma
Onychomycosis
Pityriasis (Tinea) Versicolor
Tinea Nigra
Candidiasis
Sporotrichosis
Coccidioidomycosis
Cryptococcosis
Histoplasmosis
Blastomycosis
Chromomycosis
Aspergillosis
Mucormycosis
Mycetoma
Paracoccidioidomycosis
Lobomycosis
Rhinosporidiosis
Phaeohyphomycosis
Talaromycosis (Penicilliosis)
Fusariosis
Arthropods/Parasites
Demodex Infestations
Bite Reactions
Scabies
Leishmaniasis
Larva Migrans and Currens
Onchocerciasis
Schistosomiasis
Dirofilariasis
Myiasis
Tungiasis
Pediculosis
Human Filariasis
Other
Cutaneous Endometriosis
Wells Syndrome
Thermal Injury
Black Heel
Accessory Tragus
Supernumerary Nipple
Cutaneous Lymphoid Hyperplasia
Adult-Onset Still Disease
