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VT 101 Chapter 10 [Pathology] Integumentary System

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Abrasion
Injury in which superficial layers of skin are scraped.
Abscess
Localized collection of pus.
Acne
Skin inflammation caused by plugged sebaceous glands and comedone development from papules and pustules.
Chin acne
Common condition in cats in which acne develops on the chin and lip area.
Acute moist dermatitis
Bacterial skin disease that is worsened by licking and scratching; also called hot spot.
Alopecia
Hair loss resulting in hairless patches or complete lack of hair.
Shedding
Normal hair loss due to various causes.
Atopy
Hypersensitivity reaction in animals involving pruritus with secondary dermatitis; commonly called allergies or allergic dermatitis.
Hypersensitization
Increased response to an allergen.
Hyposensitization
A decreased response to an allergen.
Bullae
Multiple contained skin elevations filled with fluid that are greater then 0.5 cm in diameter. Singular= bulla
Burn
tissue injury caused by heat, flame, electricity, chemicals, or radiation.
Carbuncle
Cluster of furuncles.
Carcinoma
Malignant neoplasm of epithelial tissue.
Cellulitis
Inflammation of connective tissue.
Diffuse
Inflammation widespread.
Localized
Inflammation within a well-defined area.
Comedo
Blackhead or build up of sebum and keratin in a pore. Plural = comedones.
Contusion
Injury that does not break the skin; characterized by pain, swelling, and discoloration.
Crust
Collection of dried sebum and cell debris.
Dermatitis
Inflammation of the skin.
Contact Dermatitis
Inflammation of the skin caused by touching an irritant.
Dermatocellulitis
Inflammation of the skin and connective tissue.
Dermatomycosis
Abnormal skin condition caused by superfical fungus; also called dermatophytosis.
Dermatophytes
Superficial fungi that are found on the skin. i.e. ringworm
Dermatosis
Abnormal skin condition. Plural = dermatosus.
Discoid lupus erythematosus
Canine autoimmune disease in which the bridge of the nose (and sometimes the face and lips) exhibit depigmentation, erythema, scaling, and erosions; abbreviated DLE; may have been called collie nose or solar dermatitis in the past.
Dyskeratosis
Abnormal alteration in keratinization.
Ecchymosis
Purplish nonelevated patch of bleeding into the skin; also called a bruise; Plural = ecchymoses
Ecthyma
Skin infection with shallow eruptions caused by a pox virus; also known as soremouth.
Eczema
General term for inflammatory skin disease characterized by erythema, papules, vesicles, crusts, and scabs either alone or in combination.
Eosinophilic granuloma complex
Collective name for autoimmune lesion of eosinophilic ulcer, eosinophilic plaque, and linear granuloma found in cats and rarely in dogs.
Eosimophilic Ulcer
Located on the lip and oral mucosa of cats. also called rodent ulcer.
Eosinophilic Plaques
Raised pruritic lesions on the ventral abdomen of cats.
Linear granulomas
Located in a line usually on the caudal aspect of the hindlimb of cats.
Erythema
Skin redness.
Erythematous
Pertaining to redness.
Erythroderma
Abnormal redness of skin occurring over a widespread area.
Erythr/o: Erythem/o, Erythemat/o
Combining forms for red
Exanthema
Cutaneous rash caused by fever or disease. Singular = exanthem
Feline Miliary Dermatitis
Skin disease of cats in which multiple crusts and bumps are present predominantly on the dorsum; the disease can be associated with many causes.
Fissure
Cracklike sore.
Fistula
Abnormal passage from an internal organ to the body surface or between two internal organs. Plural = fistulae
Flea Allergy Dermatitis
Inflammation of the skin caused by an allergic reaction to flea saliva; abbreviated FAD.
Allergen
A substance that produces an allergic response.
Footrot
Hoof disease that spreads from the interdigital skin to the deeper foot structures.
Frostbite
Tissue damage caused by extreme cold or contact with chemicals with extreme temperature (e.g. liquid nitrogen).
Furuncle
Localized skin infection in a gland or hair follicle; also called a boil.
Furunculosis
The abnormal condition of persistent boils over a period of time.
Gangrene
Necrosis associated with loss of circulation.
Necrosis
Condition of dead tissue.
Necrotic
Pertaining to dead tissue.
Putrefaction
Decay that produces a foul smell.
Granuloma
Small area of healing tissue.
Hemangioma
Benign tumor composed of newly formed blood vessels.
Hyperkeratosis
Increased growth of the horny layer of skin; also called acanthokeratodermia.
Infestations
Occupation and dwelling of a parasite on the external surface of tissue.
Ectoparafites
Live on the external surface; ecto- = means outside.
Louse
A wingless parasite insect; plural is lice.
Pediculosis
Lice infestation.
Mite
An insect with a hard exoskeleton and paired, jointed legs.
Mange
A common term for skin disease caused by mites.
Sarcoptic and Demodectic
Two types of mange depending on the the type of mite.
Chiggers
Infestation by mite larvae that results in severe pruritus.
Acariasis
Infestation with ticks or mites.
Maggots
Insect larvae found especially in dead or decaying tissue.
Myiasis
Infestation by fly larvae.
Keratosis
abnormal condition of epidermal overgrowth and thickening. Plural = keratoses.
Laceration
Accidental cut into the skin.
Lesion
Pathological change of tissue; used to describe abnormalities in many locations.
Lipoma
Benign growth of fat cells; also called fatty tumor; commonly seen in older dogs.
Macule
Flat, dicolored lesion less than 1 cm in diameter; also called macula.
Melanoma
Tumor or growth of pigmented skin cells.
Malignant melanoma
Describes cancer of the pigmented skin cells.
Amelanotic Melanoma
Unpigmented malignant melanoma.
Nodule
Small knot protruding above the skin.
Onychomycosis
Superficial fungal infection of the claw.
Pallor
Skin paleness.
Papilloma
Benign epithelial growth that is lobed.
Papule
Small, raised skin lesion less than 0.5 cm in diameter.
Parakeratosis
Lesion characterized by thick scales, cracking , and red raw surface caused by the persistence of keratinocyte nuclei in the horny layer of skin.
Paronychia
Bacterial or viral infection.
Patch
Localized skin color change greater than 1 cm in diameter.
Pemphigus
Group of immune mediated skin diseases characterized by vesicles, bullae, and ulcers.
Pemphigus Vulgaris
Most common form of pemphigus, which consists of shallow ulcerations frequently involving the oral mucosa and mucocutaneous junctions.
Petechiae
Small, pinpoint hemorrhages. Singular= petechia.
Plaque
Solid raised lesion greater than 0.5 cm in diameter.
Polyp
Growth from mucous membranes.
Pruritus
Itching.
Purpura
Condition characterized by hemorrage into the skin that causes bruising. Two types are ecchymosis and petechia.
Pustule
Small circumscribed, pus filled skin elevation.
Circumscribed
Contained in a limited area.
Pyoderma
Skin disease containing pus.
Pus
An inflammatory product made up of leukocytes, cell debris, and fluid.
Purulent
Containing or producing pus.
Puppy pyoderma
Skin disease in puppies characterized by pus-containing lesions.
Juvenile pyoderma
Skin disease in puppies that progresses to a systemic disease characterized by fever, anorexia, and enlarged and abscessing lymph nodes; also called puppy strangles.
Sarcoma
Malignant neoplasm of soft tissue arising from connective tissue.
Scale
Flake
Scar
Mark left by a healing lesion where excess collagen was produced to replace injured tissue; also called cicatrix or cicatrices, which are multiple scars.
Sebaceous Cyst
Closed sac of yellow fatty material.
Cyst
A closed sac containing fluid or semisolid material.
Seborrhea
Skin condition characterized by overproduction of sebum (oil).
Skin tag
Small growth that hangs from the body by stalks.
Ulcer
Erosion of skin or mucous membrane.
Decubital Ulcers
Erosions of skin or mucous membranes as a result of prolonged pressure; also called bedsores.
Urticaria
Localized areas of swelling that itch; also called hives.
Verrucae
Warts
Vesicle
Contained skin elevation filled with fluid that is greater than 0.5 cm in diameter; also called a blister, bulla, or bleb.
Wheal
Smooth slightly raised swollen area that itches.