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List of cutaneous conditions


List of cutaneous conditions

Many conditions affect the human body and composed of skin, hair, nails, and related muscle and glands.[1] The major function of this system is as a barrier against the external environment.[2] The skin weighs an average of four kilograms, covers an area of two square meters, and is made of three distinct layers: the epidermis, dermis, and subcutaneous tissue.[1] The two main types of human skin are: glabrous skin, the hairless skin on the palms and soles (also referred to as the "palmoplantar" surfaces), and hair-bearing skin.[3] Within the latter type, the hairs occur in structures called pilosebaceous units, each with hair follicle, sebaceous gland, and associated arrector pili muscle.[4] In the embryo, the epidermis, hair, and glands form from the ectoderm, which is chemically influenced by the underlying mesoderm that forms the dermis and subcutaneous tissues.[5][6][7]

The epidermis is the most superficial layer of skin, a squamous epithelium with several strata: the stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum basale.[8] Nourishment is provided to these layers by diffusion from the dermis, since the epidermis is without direct blood supply. The epidermis contains four cell types: keratinocytes, melanocytes, Langerhans cells, and Merkel cells. Of these, keratinocytes are the major component, constituting roughly 95% of the epidermis.[3] This stratified squamous epithelium is maintained by cell division within the stratum basale, in which differentiating cells slowly displace outwards through the stratum spinosum to the stratum corneum, where cells are continually shed from the surface.[3] In normal skin, the rate of production equals the rate of loss; about two weeks are needed for a cell to migrate from the basal cell layer to the top of the granular cell layer, and an additional two weeks to cross the stratum corneum.[9]

The dermis is the layer of skin between the epidermis and subcutaneous tissue, and comprises two sections, the papillary dermis and the reticular dermis.[10] The superficial papillary dermis interdigitates with the overlying rete ridges of the epidermis, between which the two layers interact through the basement membrane zone.[10] Structural components of the dermis are collagen, elastic fibers, and ground substance.[10] Within these components are the pilosebaceous units, arrector pili muscles, and the eccrine and apocrine glands.[8] The dermis contains two vascular networks that run parallel to the skin surface—one superficial and one deep plexus—which are connected by vertical communicating vessels.[8][11] The function of blood vessels within the dermis is fourfold: to supply nutrition, to regulate temperature, to modulate inflammation, and to participate in wound healing.[12][13]

The subcutaneous tissue is a layer of fat between the dermis and underlying fascia.[14] This tissue may be further divided into two components, the actual fatty layer, or panniculus adiposus, and a deeper vestigial layer of muscle, the panniculus carnosus.[3] The main cellular component of this tissue is the adipocyte, or fat cell.[14] The structure of this tissue is composed of septal (i.e. linear strands) and lobular compartments, which differ in microscopic appearance.[8] Functionally, the subcutaneous fat insulates the body, absorbs trauma, and serves as a reserve energy source.[14]

Conditions of the human integumentary system constitute a broad spectrum of diseases, also known as dermatoses, as well as many nonpathologic states (like, in certain circumstances, melanonychia and racquet nails).[15][16] While only a small number of skin diseases account for most visits to the physician, thousands of skin conditions have been described.[14] Classification of these conditions often presents many nosological challenges, since underlying etiologies and pathogenetics are often not known.[17][18] Therefore, most current textbooks present a classification based on location (for example, conditions of the mucous membrane), morphology (chronic blistering conditions), etiology (skin conditions resulting from physical factors), and so on.[19][20] Clinically, the diagnosis of any particular skin condition is made by gathering pertinent information regarding the presenting skin lesion(s), including the location (such as arms, head, legs), symptoms (pruritus, pain), duration (acute or chronic), arrangement (solitary, generalized, annular, linear), morphology (macules, papules, vesicles), and color (red, blue, brown, black, white, yellow).[21] Diagnosis of many conditions often also requires a skin biopsy which yields histologic information[22][23] that can be correlated with the clinical presentation and any laboratory data.[24][25][26]


  • Acneiform eruptions 1
  • Autoinflammatory syndromes 2
  • Chronic blistering 3
  • Conditions of the mucous membranes 4
  • Conditions of the skin appendages 5
  • Conditions of the subcutaneous fat 6
  • Congenital anomalies 7
  • Connective tissue diseases 8
    • Abnormalities of dermal fibrous and elastic tissue 8.1
  • Dermal and subcutaneous growths 9
  • Dermatitis 10
    • Atopic 10.1
    • Contact 10.2
    • Eczema 10.3
    • Pustular 10.4
    • Seborrheic 10.5
  • Disturbances of pigmentation 11
  • Drug eruptions 12
  • Endocrine-related 13
  • Eosinophilic 14
  • Epidermal nevi, neoplasms, cysts 15
  • Erythemas 16
  • Genodermatoses 17
  • Infection-related 18
    • Bacterium-related 18.1
      • Mycobacterium-related 18.1.1
    • Mycosis-related 18.2
    • Parasitic infestations, stings, and bites 18.3
    • Virus-related 18.4
  • Lichenoid eruptions 19
  • Lymphoid-related 20
  • Melanocytic nevi and neoplasms 21
    • Melanoma 21.1
  • Monocyte- and macrophage-related 22
  • Mucinoses 23
  • Neurocutaneous 24
  • Noninfectious immunodeficiency-related 25
  • Nutrition-related 26
  • Papulosquamous hyperkeratotic 27
    • Palmoplantar keratodermas 27.1
  • Pregnancy-related 28
  • Pruritic 29
  • Psoriasis 30
  • Reactive neutrophilic 31
  • Recalcitrant palmoplantar eruptions 32
  • Resulting from errors in metabolism 33
  • Resulting from physical factors 34
    • Ionizing radiation-induced 34.1
  • Urticaria and angioedema 35
  • Vascular-related 36
  • Footnotes 37
  • See also 38
  • References 39
  • Further reading 40
  • External links 41

Acneiform eruptions

Acneiform eruptions are caused by changes in the pilosebaceous unit.[27][28]

Autoinflammatory syndromes

Autoinflammatory syndromes are a group of inherited disorders characterized by bouts of inflammatory skin lesions and periodic fevers.[29][30]

Chronic blistering

Chronic blistering cutaneous conditions have a prolonged course and present with vesicles and bullae.[31][32][33]

Conditions of the mucous membranes

Conditions of the mucous membranes involve the moist linings of the eyes, nose, mouth, genitals, and anus.[34]

Conditions of the skin appendages

Conditions of the skin appendages are those affecting the glands of the skin, hair, nails, and arrector pili muscles.[1][35]

Conditions of the subcutaneous fat

Conditions of the subcutaneous fat are those affecting the layer of adipose tissue that lies between the dermis and underlying fascia.[36][37][38][39]

Congenital anomalies

Cutaneous congenital anomalies are a diverse group of disorders that result from faulty morphogenesis, the biological process that forms the shape of a human body.[35][40][41]

Connective tissue diseases

Connective tissue diseases are caused by a complex array of autoimmune responses that target or affect collagen or ground substance.[35][42]

Abnormalities of dermal fibrous and elastic tissue

Abnormalities of dermal fibrous and elastic tissue are caused by problems in the regulation of collagen synthesis and/or degradation.[35][43]

Dermal and subcutaneous growths

Dermal and subcutaneous growths result from (1) reactive or neoplastic proliferation of cellular components of the dermis or subcutaneous tissue, or (2) neoplasms invading or aberrantly present in the dermis.[1][35]


Dermatitis is a general term for "inflammation of the skin".[44]


Atopic dermatitis is a chronic dermatitis associated with a hereditary tendency to develop allergies to food and inhalant substances.[45][46][47]

  • Atopic dermatitis (atopic eczema, disseminated neurodermatitis, flexural eczema, infantile eczema, prurigo diathsique)


Contact dermatitis is caused by certain substances coming in contact with the skin.[48][49][50]


Eczema refers to a broad range of conditions that begin as spongiotic dermatitis and may progress to a lichenified stage.[26][51]


Pustular dermatitis is an inflammation of the skin that presents with pustular lesions.[26][52]


Seborrheic dermatitis is a chronic, superficial, inflammatory disease characterized by scaling on an erythematous base.[53]

Disturbances of pigmentation

Disturbances of human pigmentation, either loss or reduction, may be related to loss of melanocytes or the inability of melanocytes to produce melanin or transport melanosomes correctly.[54][55][56]

Drug eruptions

Drug eruptions are adverse drug reactions that present with cutaneous manifestations.[57][58][59]


Endocrine conditions often present with cutaneous findings as the skin interacts with the endocrine system in many ways.[60][61]


Eosinophilic cutaneous conditions encompass a wide variety of diseases that are characterized histologically by the presence of eosinophils in the inflammatory infiltrate, or evidence of eosinophil degranulation.[62][63]

Epidermal nevi, neoplasms, cysts

Epidermal nevi, neoplasms, cysts are skin lesions that develop from the epidermal layer of the skin.[8][26]


Erythemas are reactive skin conditions in which there is blanchable redness.[1][9]


Genodermatoses are inherited genetic skin conditions often grouped into three categories: chromosomal, single gene, and polygenetic.[64][65]


Infection-related cutaneous conditions may be caused by bacteria, fungi, yeast, viruses, and/or parasites.[26][66]


Bacterium-related cutaneous conditions often have distinct morphologic characteristics that may be an indication of a generalized systemic process or simply an isolated superficial infection.[66][67]


Mycobacterium-related cutaneous conditions are caused by Mycobacterium infections.[66][68]


Mycosis-related cutaneous conditions are caused by fungi or yeasts, and may present as either a superficial or deep infection of the skin, hair, and/or nails.[66]

Parasitic infestations, stings, and bites

Parasitic infestations, stings, and bites in humans are caused by several groups of organisms belonging to the following phyla: Annelida, Arthropoda, Bryozoa, Chordata, Cnidaria, Cyanobacteria, Echinodermata, Nemathelminthes, Platyhelminthes, and Protozoa.[66][69]


Virus-related cutaneous conditions are caused by two main groups of virusesDNA and RNA types–both of which are obligatory intracellular parasites.[66][70]

Lichenoid eruptions

Lichenoid eruptions are dermatoses related to the unique, common inflammatory disorder lichen planus, which affects the skin, mucous membranes, nails, and hair.[71][72][73]


Lymphoid-related cutaneous conditions are a group of disorders characterized by collections of lymphocyte cells within the skin.[74]

Melanocytic nevi and neoplasms

Melanocytic nevi and neoplasms are caused by either a proliferation of (1) melanocytes, or (2) nevus cells, a form of melanocyte that lack dendritic processes.[75][76]


Melanoma is a malignant proliferation of melanocytes and the most aggressive type of skin cancer.[77][78][79]

Monocyte- and macrophage-related

Monocyte- and macrophage-related cutaneous conditions are characterized histologically by infiltration of the skin by monocyte and/or macrophage cells,[10] often divided into several categories, including granulomatous disease,[80] histiocytoses,[81] and sarcoidosis.[82]


Mucinoses are a group of conditions caused by dermal fibroblasts producing abnormally large amounts of mucopolysaccharides.[34]


Neurocutaneous conditions are due nervous system disease or are psychiatric in etiology.[83][84]

Noninfectious immunodeficiency-related

Noninfectious immunodeficiency-related cutaneous conditions are caused by T-cell and/or B-cell dysfunction.[85][86]


Nutrition-related cutaneous conditions are caused by malnutrition due to an improper or inadequate diet.[87][88]

Papulosquamous hyperkeratotic

Papulosquamous hyperkeratotic cutaneous conditions are those that present with papules and scales caused by a thickening of the stratum corneum.[9]

Palmoplantar keratodermas

Palmoplantar keratodermas are a diverse group of hereditary and acquired keratodermas in which there is hyperkeratosis of the skin of the palms and soles.[89]

  • Acrokeratoelastoidosis of Costa (keratoelastoidosis marginalis)
  • Aquagenic keratoderma (acquired aquagenic palmoplantar keratoderma, aquagenic syringeal acrokeratoderma, aquagenic wrinkling of the palms, transient reactive papulotranslucent acrokeratoderma)
  • Bart–Pumphrey syndrome (palmoplantar keratoderma with knuckle pads and leukonychia and deafness)
  • Camisa disease
  • Carvajal syndrome (striate palmoplantar keratoderma with woolly hair and cardiomyopathy, striate palmoplantar keratoderma with woolly hair and left ventricular dilated cardiomyopathy)
  • Corneodermatoosseous syndrome (CDO syndrome)
  • Diffuse epidermolytic palmoplantar keratoderma (palmoplantar keratoderma cum degeneratione granulosa Vörner, Vörner's epidermolytic palmoplantar keratoderma, Vörner keratoderma)
  • Diffuse nonepidermolytic palmoplantar keratoderma (diffuse orthohyperkeratotic keratoderma, hereditary palmoplantar keratoderma, keratosis extremitatum progrediens, keratosis palmoplantaris diffusa circumscripta, tylosis, Unna–Thost disease, Unna–Thost keratoderma)
  • Erythrokeratodermia variabilis (erythrokeratodermia figurata variabilis, keratosis extremitatum progrediens, keratosis palmoplantaris transgrediens et progrediens, Mendes da Costa syndrome, Mendes da Costa type erythrokeratodermia, progressive symmetric erythrokeratoderma)
  • Focal acral hyperkeratosis (acrokeratoelastoidosis lichenoides, degenerative collagenous plaques of the hand)
  • Focal palmoplantar and gingival keratosis
  • Focal palmoplantar keratoderma with oral mucosal hyperkeratosis (focal epidermolytic palmoplantar keratoderma, hereditary painful callosities, hereditary painful callosity syndrome, keratosis follicularis, keratosis palmoplantaris nummularis, nummular epidermolytic palmoplantar keratoderma)
  • Haim–Munk syndrome (palmoplantar keratoderma with periodontitis and arachnodactyly and acro-osteolysis)
  • Hidrotic ectodermal dysplasia (alopecia congenita with keratosis palmoplantaris, Clouston syndrome, Clouston's hidrotic ectodermal dysplasia, Fischer–Jacobsen–Clouston syndrome, keratosis palmaris with drumstick fingers, palmoplantar keratoderma and clubbing)
  • Howel–Evans syndrome (familial keratoderma with carcinoma of the esophagus, focal non-epidermolytic palmoplantar keratoderma with carcinoma of the esophagus, palmoplantar ectodermal dysplasia type III, palmoplantar keratoderma associated with esophageal cancer, tylosis, tylosis–esophageal carcinoma)
  • Hystrix-like ichthyosis–deafness syndrome (HID syndrome)
  • Keratoderma climactericum (acquired plantar keratoderma, climacteric keratoderma, Haxthausen's disease)
  • Keratosis punctata palmaris et plantaris (Buschke–Fischer–Brauer disease, Davis Colley disease, keratoderma disseminatum palmaris et plantaris, keratosis papulosa, keratoderma punctatum, keratodermia punctata, keratoma hereditarium dissipatum palmare et plantare, palmar and plantar seed dermatoses, palmar keratoses, papulotranslucent acrokeratoderma, punctate keratoderma,punctate keratoses of the palms and soles, maculosa disseminata)
  • Keratitis–ichthyosis–deafness syndrome (erythrokeratodermia progressiva Burns, ichthyosiform erythroderma with corneal involvement and deafness, KID syndrome)
  • Mal de Meleda (acral keratoderma, Gamborg–Nielsen keratoderma, mutilating palmoplantar keratoderma of the Gamborg–Nielsen type, palmoplantar ectodermal dysplasia type VIII, palmoplantar keratoderma of the Norrbotten type)
  • Naxos syndrome (diffuse non-epidermolytic palmoplantar keratoderma with woolly hair and cardiomyopathy, diffuse palmoplantar keratoderma with woolly hair and arrythmogenic right ventricular cardiomyopathy of Naxos, Naxos disease)
  • Olmsted syndrome (mutilating palmoplantar keratoderma with periorificial keratotic plaques, mutilating palmoplantar keratoderma with periorificial plaques, polykeratosis of Touraine)
  • Pachyonychia congenita type I (Jadassohn–Lewandowsky syndrome)
  • Pachyonychia congenita type II (Jackson–Lawler pachyonychia congenita, Jackson–Sertoli syndrome)
  • Palmoplantar keratoderma and spastic paraplegia (Charcot–Marie–Tooth disease with palmoplantar keratoderma and nail dystrophy)
  • Palmoplantar keratoderma of Sybert (Greither palmoplantar keratoderma, Greither syndrome, keratosis extremitatum hereditaria progrediens, keratosis palmoplantaris transgrediens et progrediens, Sybert keratoderma, transgrediens and progrediens palmoplantar keratoderma)
  • Papillon–Lefèvre syndrome (palmoplantar keratoderma with periodontitis)
  • Porokeratosis plantaris discreta
  • Punctate palmoplantar keratoderma
  • Schöpf–Schulz–Passarge syndrome (eyelid cysts with palmoplantar keratoderma and hypodontia and hypotrichosis)
  • Scleroatrophic syndrome of Huriez (Huriez syndrome, palmoplantar keratoderma with scleroatrophy, palmoplantar keratoderma with sclerodactyly, scleroatrophic and keratotic dermatosis of the limbs, sclerotylosis)
  • Striate palmoplantar keratoderma (acral keratoderma, Brünauer–Fuhs–Siemens type of palmoplantar keratoderma, focal non-epidermolytic palmoplantar keratoderma, keratosis palmoplantaris varians, palmoplantar keratoderma areata, palmoplantar keratoderma striata, Wachter keratoderma, Wachters palmoplantar keratoderma)
  • Spiny keratoderma (porokeratosis punctata palmaris et plantaris, punctate keratoderma, punctate porokeratosis of the palms and soles)
  • Tyrosinemia type II (oculocutaneous tyrosinemia, Richner–Hanhart syndrome)
  • Vohwinkel syndrome (keratoderma hereditaria mutilans, keratoma hereditaria mutilans, mutilating keratoderma of Vohwinkel, mutilating palmoplantar keratoderma)


Pregnancy-related cutaneous conditions are a group of skin changes observed during pregnancy.[90][91]


Pruritus, commonly known as itchiness, is a sensation exclusive to the skin, and characteristic of many skin conditions.[92][93]


Psoriasis is a common, chronic, and recurrent inflammatory disease of the skin characterized by circumscribed, erythematous, dry, scaling plaques.[94][95][96]

Reactive neutrophilic

Reactive neutrophilic cutaneous conditions constitute a spectrum of disease mediated by neutrophils, and typically associated with underlying diseases, such as inflammatory bowel disease and hematologic malignancy.[97][98]

Recalcitrant palmoplantar eruptions

Recalcitrant palmoplantar eruptions are skin conditions of the palms and soles which are resistant to treatment.[34]

  • Dermatitis repens (acrodermatitis continua, acrodermatitis continua of Hallopeau, acrodermatitis continua suppurativa Hallopeau, acrodermatitis perstans, dermatitis repens Crocker, Hallopeau's acrodermatitis, Hallopeau's acrodermatitis continua, pustular acrodermatitis)
  • Infantile acropustulosis (acropustulosis of infancy)
  • Palmoplantar pustulosis (persistent palmoplantar pustulosis, pustular psoriasis of the Barber type, pustular psoriasis of the extremities, pustulosis of palms and soles, pustulosis palmaris et plantaris)
  • Pustular bacterid

Resulting from errors in metabolism

Skin conditions resulting from errors in metabolism are caused by enzymatic defects that lead to an accumulation or deficiency of various cellular components, including, but not limited to, amino acids, carbohydrates, and lipids.[16]

Resulting from physical factors

Skin conditions resulting from physical factors occur from a number of causes, including, but not limited to, hot and cold temperatures, friction, and moisture.[34][99][100]

Ionizing radiation-induced

Ionizing radiation-induced cutaneous conditions result from exposure to ionizing radiation.[101]

Urticaria and angioedema

  • All the Internet - Directory - Main/Health/Conditions_and_Diseases/Skin_Disorders
  • Images in Clinical Dermatology at the New England Journal of Medicine
  • Skin conditions in Yahoo! Directory (closed in late December 2014), archived at Internet Archive Wayback Machine (Wayback Machine)
  • Skin Disorders at DMOZ
  • Skin disorders in Google Directory (closed on 20 July 2011), archived at Internet Archive Wayback Machine (Wayback Machine)
  • Skin Disorders in the Best of the Web Directory (Best of the Web Directory)

External links

Further reading

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  3. ^ a b c d Burns, Tony; et al. (2006) Rook's Textbook of Dermatology CD-ROM. Wiley-Blackwell. ISBN 1-4051-3130-6.
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See also

  1. ^ Any given cutaneous condition is only included once within this list.
  2. ^ Parentheticals are used to indicate other names by which a condition is known. If there are multiple alternative names for a condition, they are separated by commas within the parenthetical.
  3. ^ Citations for any given condition name and/or alternative name(s) may be found within the condition's respective article.
  4. ^ This list uses American English; therefore, the symbols æ and œ, which are common to British English, are not used, but, rather, simplified to a single e. For example, the spelling of nevus is favored over nævus, edema over œdema, and so forth. For more information, see American and British English differences.
  5. ^ Non-English names are included within this list when those terms are found in English medical literature. Inclusion of acne excoriée des jeunes filles (French), Frambösie (German), and parangi (Malay) represent examples of this convention.
  6. ^ Abbreviations for condition names commonly described in medical literature with an acronym or initialism are included within this list.
  7. ^ Within this list, the term immunoglobulin is abbreviated to Ig when used as a prefix to a specific antibody isotype (i.e. IgA, IgD, IgE, IgG, and IgM).
  8. ^ Within this list, the terms human immunodeficiency virus and acquired immunodeficiency syndrome are abbreviated to HIV and AIDS, respectively.


Vascular-related cutaneous conditions result from dysfunction of the blood and/or blood vessels in the dermis, or lymphatics in the subcutaneous tissues.[9][104][105]



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