#skin_disease__disease_of_the_skin__skin_disorder__skin_problem__skin_condition a disease affecting the skin
supertype: #disease an impairment of health or a condition of abnormal functioning
subtype: #acantholysis a breakdown of a cell layer in the epidermis (as in pemphigus)
subtype: #acanthosis an abnormal but benign thickening of the prickle-cell layer of the skin (as in psoriasis)
subtype: #acanthosis_nigricans__keratosis_nigricans__keratosisnigrican a skin disease characterized by dark wart-like patches in the body folds; can be benign or malignant
subtype: #acne an inflammatory disease involving the sebaceous glands of the skin; characterized by papules or pustules or comedones
subtype: #acne_rosacea__rosacea a skin disease of adults (more often women) in which blood vessels of the face enlarge resulting in a flushed appearance
subtype: #acne_vulgaris the most common form of acne; usually affects people from puberty to young adulthood
subtype: #dermatosis disorder involving lesions or eruptions of the skin (in which there is usually no inflammation)
subtype: #pityriasis any of several skin disorders characterized by shedding dry flakes of skin
subtype: #dandruff.pityriasis a condition in which white scales of dead skin are shed by the scalp
subtype: #pityriasis_alba common form of pityriasis (usually in children or young adults) characterized by round patches of depigmentation
subtype: #pityriasis_rosea pityriasis in which an itchy rash develops over the trunk and extremities
subtype: #eczema generic term for inflammatory conditions of the skin; particularly with vesiculation in the acute stages
subtype: #dermatitis inflammation of the skin; skin becomes itchy and may develop blisters
subtype: #actinic_dermatitis dermatitis caused exposure to sunlight
subtype: #atopic_dermatitis__atopic_eczema dermatitis characterized by atopy
subtype: #contact_dermatitis a delayed type of allergic reaction of the skin resulting from skin contact with a specific allergen (such as poison ivy)
subtype: #bubble_gum_dermatitis an allergic contact dermatitis developed around the lips of children who chew bubble gum
subtype: #Rhus_dermatitis contact dermatitis resulting from contact with plants of the genus Toxicodendron
subtype: #poison_ivy dermatitis resulting from contact with the poison ivy plant
subtype: #poison_oak dermatitis resulting from contact with a poison oak plant
subtype: #poison_sumac dermatitis resulting from contact with a poison sumac plant
subtype: #cradle_cap a dermatitis of the scalp that is common in infants
subtype: #diaper_rash__diaper_dermatitis dermatitis of the thighs and buttocks of infants; supposedly caused by ammonia in the urine in the child's diapers
subtype: #hypericism a severe dermatitis of herbivorous domestic animals attributable to photosensitivity from eating Saint John's wort
subtype: #neurodermatitis__neurodermatiti dermatitis in which localized areas (especially the forearms or back of the neck or outer part of the ankle) itch persistently; cause is unknown
subtype: #schistosome_dermatitis__swimmer's_itch__swimmer'sitch a sensitization reaction to repeated invasion of the skin by cercariae of schistosomes (human or animal)
subtype: #seborrheic_dermatitis__seborrheic_eczema a chronic skin disease associated with seborrhea and greasy scales on the scalp or eyelids or other parts of the skin
subtype: #allergic_eczema eczema caused by an allergic reaction
subtype: #baker's_eczema__baker'seczema allergic eczema caused by flour or other ingredients handled by bakers
subtype: #eczema_herpeticum eczema characterized by a feverish condition and widespread eruption of vesicles; most common in children
subtype: #lichtenoid_eczema__chronic_eczema__chroniceczema__eczema_hypertrophicum eczema characterized by thickening of the skin with accentuated skin lines
subtype: #erythroderma any skin disorder involving abnormal redness
subtype: #erythema abnormal redness of the skin resulting from dilation of blood vessels (as in sunburn or inflammation)
subtype: #erythema_multiforme a red rash caused by hypersensitivity to a drug or disease or other allergen
subtype: #erythema_nodosum skin condition characterized by tender red nodules on the shins and legs
subtype: #erythema_nodosum_leprosum__ENL an inflammatory complication of leprosy that results in painful skin lesions on the arms and legs and face
subtype: #hickey__love_bite a temporary red mark on a person's skin resulting from kissing or sucking by their lover
subtype: #erythema_solare__sunburn redness of the skin caused by exposure to the rays of the sun
subtype: #windburn redness and irritation of the skin caused by exposure to high-velocity wind
subtype: #flare.erythroderma reddening of the skin spreading outward from a focus of infection or irritation
subtype: #furunculosis acute skin disease characterized by the presence of many furuncles
subtype: #impetigo a very contagious infection of the skin; common in children; localized redness develops into small blisters that gradually crust and erode
subtype: #jungle_rot skin disorder induced by a tropical climate
subtype: #keratoderma any skin disorder consisting of a growth that appears horny
subtype: #keratonosis any abnormal condition of the outer skin (epidermis)
subtype: #keratosis__keratosi a skin condition marked by an overgrowth of layers of horny skin
subtype: #actinic_keratosis__actinickeratosi an overgrowth of skin layers resulting from extended exposure to the sun
subtype: #keratosis_blennorrhagica__keratosisblennorrhagica__keratoderma_blennorrhagica__keratodermablennorrhagica skin disease characterized by a scaly rash on the palms and soles; associated with Reiter's syndrome
subtype: #keratosis_follicularis__Darier's_disease a rare hereditary condition marked by dark crusted patches (sometimes containing pus)
subtype: #keratosis_pilaris__keratosispilari keratosis characterized by hard conical elevations in the openings of sebaceous glands (especially of arms and thighs)
subtype: #seborrheic_keratosis a skin condition characterized by circumscribed wartlike lesions that can be itchy and covered with a greasy crust
subtype: #leukoderma a congenital skin condition characterized by spots or bands of unpigmented skin
subtype: #lichen.skin_disease any of several eruptive skin diseases characterized by hard thick lesions grouped together and resembling lichens growing on rocks
subtype: #lichen_planus__lichen_ruber_planus an eruption of shiny flat-topped purplish (usually itchy) papules on the wrist and forearms and thighs
subtype: #livedo skin disorder characterized by patchy bluish discolorations on the skin
subtype: #lupus__lupu any of several forms of ulcerative skin disease
subtype: #lupus_vulgaris tuberculosis of the skin; appears first on the face and heals slowly leaving deep scars
subtype: #discoid_lupus_erythematosus__DLE a chronic skin disease occurring primarily in women between the ages of 20 and 40; characterized by an eruption of red lesions over the cheeks and bridge of the nose
subtype: #lupus_erythematosus__lupuserythematosu__LE a chronic inflammatory collagen disease affecting connective tissue (skin or joints)
subtype: #systemic_lupus_erythematosus__SLE__disseminated_lupus_erythematosus an inflammatory disease of connective tissue with variable features including fever and weakness and fatigability and joint pains and skin lesions on the face or neck or arms
subtype: #melanosis__melanosi__melanism a condition characterized by abnormal deposits of melanin (especially in the skin)
subtype: #molluscum any skin disease characterized by soft pulpy nodules
subtype: #molluscum_contagiosum__molluscumcontagiosum a virus disease of the skin marked by round white swellings; transmitted from person to person (most often in children or in adults with impaired immune function)
subtype: #necrobiosis_lipoidica_diabeticorum__necrobiosislipoidicadiabeticorum__necrobiosis_lipoidica__necrobiosislipoidica skin disease marked by thin shiny patches (especially on the legs); often associated with diabetes mellitus
subtype: #pemphigus__pemphigu a skin disease characterized by large thin-walled blisters (bullae) arising from normal skin or mucous membrane
subtype: #prurigo chronic inflammatory disease of the skin characterized by blister capped papules and intense itching
subtype: #psoriasis__psoriasi a chronic skin disease characterized by dry red patches covered with scales; occurs especially on the scalp and ears and genitalia and the skin over bony prominences
subtype: #rhagades cracks or fissures in the skin (especially around the mouth or anus)
subtype: #Saint_Anthony's_fire any of several inflammatory or gangrenous skin conditions
subtype: #erysipelas an acute streptococcal infection characterized by deep-red inflammation of the skin and mucous membranes
subtype: #seborrhea a condition in which overactivity of the sebaceous glands causes the skin to become oily
subtype: #vitiligo an acquired skin disease characterized by patches of unpigmented skin (often surrounded by a heavily pigmented border)
subtype: #xanthoma a skin problem marked by the development (on the eyelids and neck and back) of irregular yellow nodules; sometimes attributable to disturbances of cholesterol metabolism
subtype: #xanthelasma xanthoma of the eyelids; occurs chiefly in the elderly
subtype: #xanthoma_disseminatum rare chronic xanthoma of adults n which orange or brownish papules develop on many surfaces of the body
subtype: #xanthomatosis__xanthomatosi__xanthoma_multiplex__cholesterosis_cutis__cholesterosiscuti__lipid_granulomatosis__lipoid_granulomatosis widespread xanthomas (especially on elbows and knees); often associated with a disorder of lipid metabolism
subtype: #xanthosis__xanthosi an abnormal yellow discoloration of the skin
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