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acanthosis
an abnormal but benign thickening of the prickle-cell layer of the skin (as in psoriasis)
acanthosis: an abnormal but benign thickening of the prickle-cell layer of the skin (as in psoriasis)
acanthosis_nigricans
a skin disease characterized by dark wartlike patches in the body folds; can be benign or malignant
acanthosis_nigricans: a skin disease characterized by dark wartlike patches in the body folds; can be benign or malignant
acne
an inflammatory disease involving the sebaceous glands of the skin; characterized by papules or pustules or comedones
acne: an inflammatory disease involving the sebaceous glands of the skin; characterized by papules or pustules or comedones
acne_rosacea
a skin disease of adults (more often women) in which blood vessels of the face enlarge resulting in a flushed appearance
acne_rosacea: a skin disease of adults (more often women) in which blood vessels of the face enlarge resulting in a flushed appearance
acne_vulgaris
the most common form of acne; usually affects people from puberty to young adulthood
acne_vulgaris: the most common form of acne; usually affects people from puberty to young adulthood
actinic_dermatitis
dermatitis caused exposure to sunlight
actinic_dermatitis: dermatitis caused exposure to sunlight
atopic_dermatitis
a severe form of dermatitis characterized by atopy
atopic_dermatitis: a severe form of dermatitis characterized by atopy
bubble_gum_dermatitis
an allergic contact dermatitis developed around the lips of children who chew bubble gum
bubble_gum_dermatitis: an allergic contact dermatitis developed around the lips of children who chew bubble gum
contact_dermatitis
a delayed type of allergic reaction of the skin resulting from skin contact with a specific allergen (such as poison ivy)
contact_dermatitis: a delayed type of allergic reaction of the skin resulting from skin contact with a specific allergen (such as poison ivy)
Rhus_dermatitis
contact dermatitis resulting from contact with plants of the genus Toxicodendron
Rhus_dermatitis: contact dermatitis resulting from contact with plants of the genus Toxicodendron
poison_ivy
dermatitis resulting from contact with the poison ivy plant
poison_ivy: dermatitis resulting from contact with the poison ivy plant
poison_oak
dermatitis resulting from contact with a poison oak plant
poison_oak: dermatitis resulting from contact with a poison oak plant
poison_sumac
dermatitis resulting from contact with a poison sumac plant
poison_sumac: dermatitis resulting from contact with a poison sumac plant
cradle_cap
a dermatitis of the scalp that is common in infants
cradle_cap: a dermatitis of the scalp that is common in infants
diaper_rash
dermatitis of the thighs and buttocks of infants; supposedly caused by ammonia in the urine in the child's diapers
diaper_rash: dermatitis of the thighs and buttocks of infants; supposedly caused by ammonia in the urine in the child's diapers
hypericism
a severe dermatitis of herbivorous domestic animals attributable to photosensitivity from eating Saint John's wort
hypericism: a severe dermatitis of herbivorous domestic animals attributable to photosensitivity from eating Saint John's wort
neurodermatitis
dermatitis in which localized areas (especially the forearms or back of the neck or outer part of the ankle) itch persistently; cause is unknown
neurodermatitis: dermatitis in which localized areas (especially the forearms or back of the neck or outer part of the ankle) itch persistently; cause is unknown
schistosome_dermatitis
a sensitization reaction to repeated invasion of the skin by cercariae of schistosomes
schistosome_dermatitis: a sensitization reaction to repeated invasion of the skin by cercariae of schistosomes
dermatitis
inflammation of the skin; skin becomes itchy and may develop blisters
dermatitis: inflammation of the skin; skin becomes itchy and may develop blisters
dermatosis
disorder involving lesions or eruptions of the skin (in which there is usually no inflammation)
dermatosis: disorder involving lesions or eruptions of the skin (in which there is usually no inflammation)
baker's_eczema
allergic eczema caused by flour or other ingredients handled by bakers
baker's_eczema: allergic eczema caused by flour or other ingredients handled by bakers
allergic_eczema
eczema caused by an allergic reaction
allergic_eczema: eczema caused by an allergic reaction
eczema_herpeticum
eczema characterized by a feverish condition and widespread eruption of vesicles; most common in children
eczema_herpeticum: eczema characterized by a feverish condition and widespread eruption of vesicles; most common in children
eczema_vaccinatum
a now rare complication of vaccinia superimposed on atopic dermatitis with high fever and generalized vesicles and papulovesicles
eczema_vaccinatum: a now rare complication of vaccinia superimposed on atopic dermatitis with high fever and generalized vesicles and papulovesicles
lichtenoid_eczema
eczema characterized by thickening of the skin with accentuated skin lines
lichtenoid_eczema: eczema characterized by thickening of the skin with accentuated skin lines
eczema
generic term for inflammatory conditions of the skin; particularly with vesiculation in the acute stages
eczema: generic term for inflammatory conditions of the skin; particularly with vesiculation in the acute stages
erythema
abnormal redness of the skin resulting from dilation of blood vessels (as in sunburn or inflammation)
erythema: abnormal redness of the skin resulting from dilation of blood vessels (as in sunburn or inflammation)
erythema_multiforme
a red rash caused by hypersensitivity to a drug or disease or other allergen
erythema_multiforme: a red rash caused by hypersensitivity to a drug or disease or other allergen
erythema_nodosum
skin condition characterized by tender red nodules on the shins and legs
erythema_nodosum: skin condition characterized by tender red nodules on the shins and legs
hickey
a temporary red mark on a person's skin resulting from kissing or sucking by their lover
hickey: a temporary red mark on a person's skin resulting from kissing or sucking by their lover
erythema_nodosum_leprosum
an inflammatory complication of leprosy that results in painful skin lesions on the arms and legs and face
erythema_nodosum_leprosum: an inflammatory complication of leprosy that results in painful skin lesions on the arms and legs and face
erythroderma
any skin disorder involving abnormal redness
erythroderma: any skin disorder involving abnormal redness
flare
reddening of the skin spreading outward from a focus of infection or irritation
flare: reddening of the skin spreading outward from a focus of infection or irritation
furunculosis
acute skin disease characterized by the presence of many furuncles
furunculosis: acute skin disease characterized by the presence of many furuncles
impetigo
a very contagious infection of the skin; common in children; localized redness develops into small blisters that gradually crust and erode
impetigo: a very contagious infection of the skin; common in children; localized redness develops into small blisters that gradually crust and erode
jungle_rot
skin disorder induced by a tropical climate
jungle_rot: skin disorder induced by a tropical climate
keratoderma
any skin disorder consisting of a growth that appears horny
keratoderma: any skin disorder consisting of a growth that appears horny
keratonosis
any abnormal condition of the outer skin (epidermis)
keratonosis: any abnormal condition of the outer skin (epidermis)
keratosis
a skin condition marked by an overgrowth of layers of horny skin
keratosis: a skin condition marked by an overgrowth of layers of horny skin
actinic_keratosis
an overgrowth of skin layers resulting from extended exposure to the sun
actinic_keratosis: an overgrowth of skin layers resulting from extended exposure to the sun
keratosis_blennorrhagica
skin disease characterized by a scaly rash on the palms and soles; associated with Reiter's syndrome
keratosis_blennorrhagica: skin disease characterized by a scaly rash on the palms and soles; associated with Reiter's syndrome
keratosis_follicularis
a rare hereditary condition marked by dark crusted patches (sometimes containing pus)
keratosis_follicularis: a rare hereditary condition marked by dark crusted patches (sometimes containing pus)
keratosis_pilaris
keratosis characterized by hard conical elevations in the openings of sebaceous glands (especially of arms and thighs)
keratosis_pilaris: keratosis characterized by hard conical elevations in the openings of sebaceous glands (especially of arms and thighs)
seborrheic_keratosis
a skin condition characterized by circumscribed wartlike lesions that can be itchy and covered with a greasy crust
seborrheic_keratosis: a skin condition characterized by circumscribed wartlike lesions that can be itchy and covered with a greasy crust
leukoderma
a congenital skin condition characterized by spots or bands of unpigmented skin
leukoderma: a congenital skin condition characterized by spots or bands of unpigmented skin
lichen
any of several eruptive skin diseases characterized by hard thick lesions grouped together and resembling lichens growing on rocks
lichen: any of several eruptive skin diseases characterized by hard thick lesions grouped together and resembling lichens growing on rocks
lichen_planus
an eruption of shiny flat-topped purplish (usually itchy) papules on the wrist and forearms and thighs
lichen_planus: an eruption of shiny flat-topped purplish (usually itchy) papules on the wrist and forearms and thighs
livedo
skin disorder characterized by patchy bluish discolorations on the skin
livedo: skin disorder characterized by patchy bluish discolorations on the skin
lupus
any of several forms of ulcerative skin disease
lupus: any of several forms of ulcerative skin disease
melanosis
a condition characterized by abnormal deposits of melanin (especially in the skin)
melanosis: a condition characterized by abnormal deposits of melanin (especially in the skin)
molluscum
any skin disease characterized by soft pulpy nodules
molluscum: any skin disease characterized by soft pulpy nodules
molluscum_contagiosum
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)
molluscum_contagiosum: 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)
necrobiosis_lipoidica
skin disease marked by thin shiny patches (especially on the legs); often associated with diabetes mellitus
necrobiosis_lipoidica: skin disease marked by thin shiny patches (especially on the legs); often associated with diabetes mellitus
pemphigus
a skin disease characterized by large thin-walled blisters (bullae) arising from normal skin or mucous membrane
pemphigus: a skin disease characterized by large thin-walled blisters (bullae) arising from normal skin or mucous membrane
pityriasis
any of several skin disorders characterized by shedding dry flakes of skin
pityriasis: any of several skin disorders characterized by shedding dry flakes of skin
dandruff
a condition in which white scales of dead skin are shed by the scalp
dandruff: a condition in which white scales of dead skin are shed by the scalp
pityriasis_alba
common form of pityriasis (usually in children or young adults) characterized by round patches of depigmentation
pityriasis_alba: common form of pityriasis (usually in children or young adults) characterized by round patches of depigmentation
pityriasis_rosea
pityriasis in which an itchy rash develops over the trunk and extremities
pityriasis_rosea: pityriasis in which an itchy rash develops over the trunk and extremities
prurigo
chronic inflammatory disease of the skin characterized by blister capped papules and intense itching
prurigo: chronic inflammatory disease of the skin characterized by blister capped papules and intense itching
psoriasis
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
psoriasis: 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
rhagades
cracks or fissures in the skin (especially around the mouth or anus)
rhagades: cracks or fissures in the skin (especially around the mouth or anus)
Saint_Anthony's_fire
any of several inflammatory or gangrenous skin conditions
Saint_Anthony's_fire: any of several inflammatory or gangrenous skin conditions
erysipelas
an acute streptococcal infection characterized by deep-red inflammation of the skin and mucous membranes
erysipelas: an acute streptococcal infection characterized by deep-red inflammation of the skin and mucous membranes
scleredema
a skin disease marked by hard edema of the tissue usually beginning in the face
scleredema: a skin disease marked by hard edema of the tissue usually beginning in the face
seborrhea
a condition in which overactivity of the sebaceous glands causes the skin to become oily
seborrhea: a condition in which overactivity of the sebaceous glands causes the skin to become oily
seborrheic_dermatitis
a chronic skin disease associated with seborrhea and greasy scales on the scalp or eyelids or other parts of the skin
seborrheic_dermatitis: a chronic skin disease associated with seborrhea and greasy scales on the scalp or eyelids or other parts of the skin
vitiligo
an acquired skin disease characterized by patches of unpigmented skin (often surrounded by a heavily pigmented border)
vitiligo: an acquired skin disease characterized by patches of unpigmented skin (often surrounded by a heavily pigmented border)
xanthelasma
xanthoma of the eyelids; occurs chiefly in the elderly
xanthelasma: xanthoma of the eyelids; occurs chiefly in the elderly
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
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
xanthoma_disseminatum
rare chronic xanthoma of adults in which orange or brownish papules develop on many surfaces of the body
xanthoma_disseminatum: rare chronic xanthoma of adults in which orange or brownish papules develop on many surfaces of the body
xanthomatosis
widespread xanthomas (especially on elbows and knees); often associated with a disorder of lipid metabolism
xanthomatosis: widespread xanthomas (especially on elbows and knees); often associated with a disorder of lipid metabolism
xanthosis
an abnormal yellow discoloration of the skin
xanthosis: an abnormal yellow discoloration of the skin
growth
(pathology) an abnormal proliferation of tissue (as in a tumor)
growth: (pathology) an abnormal proliferation of tissue (as in a tumor)
exostosis
a benign outgrowth from a bone (usually covered with cartilage)
exostosis: a benign outgrowth from a bone (usually covered with cartilage)
polyp
a small vascular growth on the surface of a mucous membrane
polyp: a small vascular growth on the surface of a mucous membrane
adenomatous_polyp
a polyp that consists of benign neoplastic tissue derived from glandular epithelium
adenomatous_polyp: a polyp that consists of benign neoplastic tissue derived from glandular epithelium
sessile_polyp
a relatively flat polyp
sessile_polyp: a relatively flat polyp
pedunculated_polyp
a polyp with a stalk or peduncle
pedunculated_polyp: a polyp with a stalk or peduncle
peduncle
the thin process of tissue that attaches a polyp to the body
peduncle: the thin process of tissue that attaches a polyp to the body
tumor
an abnormal new mass of tissue that serves no purpose
tumor: an abnormal new mass of tissue that serves no purpose
acanthoma
a neoplasm originating in the epidermis
acanthoma: a neoplasm originating in the epidermis
adenoma
a benign epithelial tumor of glandular origin
adenoma: a benign epithelial tumor of glandular origin
angioma
a tumor consisting of a mass of blood or lymphatic vessels
angioma: a tumor consisting of a mass of blood or lymphatic vessels
chondroma
a common benign tumor of cartilage cells
chondroma: a common benign tumor of cartilage cells
benign_tumor
a tumor that is not cancerous
benign_tumor: a tumor that is not cancerous
blastoma
a tumor composed of immature undifferentiated cells
blastoma: a tumor composed of immature undifferentiated cells
brain_tumor
a tumor in the brain
brain_tumor: a tumor in the brain
glioblastoma
a fast-growing malignant brain tumor composed of spongioblasts; nearly always fatal
glioblastoma: a fast-growing malignant brain tumor composed of spongioblasts; nearly always fatal
glioma
a tumor of the brain consisting of neuroglia
glioma: a tumor of the brain consisting of neuroglia
carcinoid
a small tumor (benign or malignant) arising from the mucosa of the gastrointestinal tract; usually associated with excessive secretion of serotonin
carcinoid: a small tumor (benign or malignant) arising from the mucosa of the gastrointestinal tract; usually associated with excessive secretion of serotonin
carcinosarcoma
a malignant neoplasm composed of carcinoma and sarcoma extensively intermixed
carcinosarcoma: a malignant neoplasm composed of carcinoma and sarcoma extensively intermixed
celioma
an abdominal tumor
celioma: an abdominal tumor
malignancy
(medicine) a malignant state; progressive and resistant to treatment and tending to cause death
malignancy: (medicine) a malignant state; progressive and resistant to treatment and tending to cause death
granulation
new connective tissue and tiny blood vessels that form on the surfaces of a wound during the healing process
granulation: new connective tissue and tiny blood vessels that form on the surfaces of a wound during the healing process
enchondroma
benign slow-growing tumor of cartilaginous cells at the ends of tubular bones (especially in the hands and feet)
enchondroma: benign slow-growing tumor of cartilaginous cells at the ends of tubular bones (especially in the hands and feet)
fibroadenoma
benign and movable and firm and not tender tumor of the breast; common in young women and caused by high levels of estrogen
fibroadenoma: benign and movable and firm and not tender tumor of the breast; common in young women and caused by high levels of estrogen
fibroid_tumor
benign tumor containing fibrous tissue (especially in the uterus)
fibroid_tumor: benign tumor containing fibrous tissue (especially in the uterus)
fibroma
nonmalignant tumor of connective tissue
fibroma: nonmalignant tumor of connective tissue
granuloma
a tumor composed of granulation tissue resulting from injury or inflammation or infection
granuloma: a tumor composed of granulation tissue resulting from injury or inflammation or infection
gumma
a small rubbery granuloma that is characteristic of an advanced stage of syphilis
gumma: a small rubbery granuloma that is characteristic of an advanced stage of syphilis