dermatitis /der·ma·ti·tis/ (der″mah-ti´tis) pl. dermati´tides inflammation of the skin.
allergic contact dermatitis.
dermatitis (durm
tī´tis),
allergic contact dermatitis
actinic dermatitis dermatitis due to exposure to actinic radiation, such as that from the sun, ultraviolet waves, or x- or gamma radiation.
allergic dermatitis
1. atopic d.
allergic contact dermatitis contact dermatitis due to allergic sensitization.
ammonia dermatitis diaper dermatitis attributed to skin irritation, due to the ammonia decomposition products of urine.
atopic dermatitis a chronic inflammatory, pruritic, eczematous skin disorder in individuals with a hereditary predisposition to cutaneous pruritus; often accompanied by allergic rhinitis, hay fever, and asthma.
berlock dermatitis , berloque dermatitis dermatitis of the neck, face, or chest, with patches or streaks, caused by exposure to perfume or other toilet articles containing bergamot oil and then to sunlight.
cercarial dermatitis swimmers' itch.
contact dermatitis acute or chronic dermatitis caused by substances contacting the skin; it may involve allergic or nonallergic mechanisms.
diaper dermatitis diaper rash.
dermatitis exfoliati´va neonato´rum staphylococcal scalded skin syndrome.
exfoliative dermatitis virtually universal erythema, desquamation, scaling, and itching of the skin, with loss of hair.
dermatitis herpetifor´mis pruritic chronic dermatitis with successive groups of symmetrical, erythematous, papular, vesicular, eczematous, or bullous lesions, usually associated with asymptomatic gluten-sensitive enteropathy.
infectious eczematous dermatitis a pustular eczematoid eruption arising from a primary lesion that is the source of an infectious exudate.
insect dermatitis a transient skin eruption caused by the toxin-containing irritant hairs of insects such as certain moths and their caterpillars.
irritant dermatitis a nonallergic type of contact dermatitis due to exposure to a substance that damages the skin.
livedoid dermatitis local pain, swelling, livedoid changes, and increased temperature; due to temporary or prolonged local ischemia from vasculitis or from accidental arterial obliteration during intragluteal administration of medications.
meadow dermatitis , meadow-grass dermatitis phytophotodermatitis with eruption of vesicles and bullae in streaks or other configurations, caused by exposure to sunlight after contact with meadow grass.
photoallergic contact dermatitis , photocontact dermatitis allergic contact dermatitis caused by the action of sunlight on skin sensitized by contact with substances such as halogenated salicylanilides, sandalwood oil, or hexachlorophene.
phototoxic dermatitis erythema followed by hyperpigmentation of sun-exposed areas of the skin, due to exposure to agents containing photosensitizing substances, such as coal tar and psoralen-containing perfumes, drugs, or plants, and then to sunlight.
poison ivy dermatitis , poison oak dermatitis, poison sumac dermatitis allergic contact dermatitis due to exposure to plants of the genus Rhus, which contain urushiol, a skin-sensitizing agent.
radiation dermatitis radiodermatitis.
rat mite dermatitis that due to a bite of the rat-mite, Ornithonyssus bacoti.
dermatitis re´pens acrodermatitis continua.
schistosome dermatitis swimmer's itch.
seborrheic dermatitis , dermatitis seborrhe´ica chronic pruritic dermatitis with erythema, scaling, and yellow crust on areas such as the scalp, with exfoliation of excessive dandruff.
stasis dermatitis chronic eczematous dermatitis due to venous insufficiency, initially on the inner aspect of the lower leg above the internal malleolus, sometimes spreading over the lower leg, marked by edema, pigmentation, and often ulceration.
swimmers' dermatitis see under itch.
uncinarial dermatitis ground itch.
x-ray dermatitis radiodermatitis.
allergic contact dermatitis.
See allergic dermatitis.
dermatitis (durm
tī´tis),n an inflammation of the skin.
dermatitis, allergic contact,
n the reaction of the skin to direct contact with a specific antigen. Poison ivy rash is a common example of an allergic contact dermatitis.
dermatitis, atopic
(ātō´pik),
n an atopic eczema characterized by the distinctive phenomenon of atopy, a familial related allergic response associated with IgE antibody.
n an atopic eczema characterized by the distinctive phenomenon of atopy, a familial related allergic response associated with IgE antibody.
dermatitis, contact,
n a delayed type of induced sensitivity (allergy) of the skin with varying degrees of erythema, edema, and vesiculation, resulting from cutaneous contact with a specific allergen. It is an occupational hazard in dentistry.
dermatitis herpetiformis
n dermatitis characterized by grouped, erythematous, papular, vesicular, pustular, or bullous lesions occurring in various combinations, often accompanied by vesicobullous and ulcerative lesions of the oral mucosa.
dermatitis infectiosa eczematoides (Engman's disease),
n a pustular eczematous eruption that frequently follows or occurs coincidentally with some pyogenic process.
dermatitis, occupational,
n a contact dermatitis associated with allergens found in the workplace.
dermatitis, radiation,
n an inflammation of the skin resulting from a high dose of radiation. The reaction varies with the quality and quantity of radiation used and is usually transitory.
dermatitis, seborrheic
n a chronic inflammatory skin disease that can affect the scalp, face, ears, armpits, breasts, and groin. Its symptoms include moist, greasy, or dry scaling and patches of yellowish crust. Although the cause is unknown, it can be treated with selenium sulfide shampoos, topical antibiotics, and topical and oral corticosteroids.
)
Dermatitis.
allergic
pertaining to or caused by allergy.
allergic alveolitis
allergic breakthrough
a theory which attributes temporary increases in clinical severity of atopy to influences, such as concurrent disease or hormonal variations, acting to inhibit the mechanisms which normally regulate production of IgE at low levels following sensitization.
allergic bronchitis
allergic contact dermatitis
results from percutaneous sensitization to allergens, usually haptens, that form covalent bonds with epidermal proteins, and the development of a delayed (type IV) hypersensitivity. Lesions typically correspond in location to the area of contact between allergen and skin which in animals is often in relatively hairless areas unless the allergen is presented in liquid form.
allergic dermatitis
inflammation of the skin resulting from exposure to antigens to which the animal is hypersensitive. Usually involving immediate (type I) hypersensitivity but also commonly applied to reactions involving delayed (type IV) hypersensitivity. The specific skin reaction, lesions and pattern of disease produced depend on many factors including the type of allergen and immune mechanism, route of exposure and species differences. See also atopy, sweet itch, allergic contact dermatitis (above).
allergic encephalitis
see experimental allergic encephalomyelitis.
equine allergic dermatitis
an intensely itchy dermatitis along the back of horses caused by sensitivity to the bites of the sandfly Culicoides brevitarsus and possibly other insects. Called also sweet itch, Queensland itch.
allergic inhalant dermatitis
see atopy.
allergic reaction
an immune-mediated, adverse clinical response, following the inhalation, ingestion or injection of an antigen by a sensitized animal. Manifestations include urticaria or anaphylaxis.
allergic urticaria
see urticaria.
dermatitis
inflammation of the skin. Dermatitis can result from various animal, vegetable and chemical substances, from heat or cold, from mechanical irritation, from certain forms of malnutrition, or from infectious disease.
actinobacillary dermatitis
rare disease in cattle; large ulcers discharging yellow pus or nodules, on lymphatics with local lymph node enlargement.
acute moist dermatitis
a superficial bacterial infection of the skin, usually caused by self-trauma, i.e. scratching, rubbing, biting. In dogs, ectoparasites, otitis, anal sacculitis and pruritic skin diseases are common precipitating causes. Affected skin is moist, weeping, and has a covering of matted haircoat and dried exudate. Staphylococcus spp. are usually present. Called also pyotraumatic dermatitis, 'hot spots'.
allergic contact dermatitis
allergic inhalant dermatitis
see canine atopy.
atopic dermatitis
see canine atopy.
cercarial dermatitis
see trichobilharzia.
cheyletiella dermatitis
see cheyletiella.
contagious pustular dermatitis of sheep
see contagious ecthyma.
coronet dermatitis
part of several infectious mucosal diseases of cattle; also in equine pemphigus.
dermatitis crustosa
exudative epidermitis.
elaeophorial dermatitis
see elaeophoriasis.
equine contagious pustular dermatitis
see canadian horsepox.
equine exfoliative eosinophilic dermatitis
characterized by infiltration of eosinophils and granulomatous inflammation with ulcerative stomatitis and wasting; suspected of being a hypersensitivity to Strongylus equinus larvae.
equine staphylococcal dermatitis
see equine staphylococcal dermatitis.
exudative dermatitis of pigs
see exudative epidermitis.
feline miliary dermatitis
a papular, crusting skin disease located predominantly on the back, with varying degrees of pruritus. Ectoparasites, food and drug allergy, and infection by fungi or bacteria are among the many possible causes. Called also scabby cat disease.
feline psychogenic dermatitis
see idopathic hyperesthesia syndrome.
feline solar dermatitis
see solar dermatitis (below).
fibrosing dermatitis
dermatitis sufficiently severe to affect deep layers of the dermis results in scarring of the skin due to excessive fibrous tissue formation.
filarial dermatitis
fold dermatitis
moisture, friction and secondary infection in body folds such as facial fold in brachycephalic dog breeds, tail fold in dog breeds with extremely short, often screw, tails, lip fold in spaniel breeds, perivulvar fold in obese bitches, and all over the body in the Shar pei. 
)
Nasal fold dermatitis in a Bulldog. By permissionfrom Kummel BA, Color Atlas of Small Animal Dermatology,Mosby, 1989
grain itch mite dermatitis
a transient, superficial dermatitis, mostly about the head in horses; may be all over the body in pigs. Caused by pediculoides ventricosus or tyroglyphus.
granular dermatitis
swamp cancer.
dermatitis herpetiformis
chronic dermatitis in humans marked by successive crops of grouped, symmetrical, erythematous, papular, vesicular, eczematous or bullous lesions, accompanied by itching and burning; a granular deposition of IgA immunoglobulin around the lesion almost always occurs. Occurs rarely in dogs.
idiopathic caprine dermatitis
alopecic, exudative dermatitis of pygmy goats.
infectious dermatitis of piglets
see contagious porcine pyoderma.
inhalant dermatitis
see canine atopy.
interdigital dermatitis
see interdigital dermatitis.
interface dermatitis
a histopathological pattern of inflammatory skin disease with the dermoepidermal junction obscured by hydropic degeneration and/or lichenoid cellular infiltrate.
intertriginous dermatitis
see fold dermatitis (above).
intraepidermal pustular dermatitis
see equine allergic dermatitis.
lipfold dermatitis
see fold dermatitis (above).
Malassezia dermatitis
a pruritic, seborrheic skin disease of dogs, particularly some breeds including West Highland white terriers, Shetland sheepdogs, Poodles, and Cocker spaniels, and rarely cats, caused by colonization of the skin by the yeast, Malassezia pachydermatis. There is usually an underlying cause such as atopy or bacterial pyoderma.
mammary pustular dermatitis
dermatitis medicamentosa
an eruption or solitary skin lesion caused by a drug taken internally.
miliary dermatitis
see feline miliary dermatitis (above).
moist dermatitis of rabbits
the rabbit's pendulous dewlap keeps getting wet and develops a moist dermatitis as a result. Called also slobbers, wet dewlap.
mycotic dermatitis
see mycotic dermatitis.
nasal solar dermatitis
see solar dermatitis (below), collie nose.
ovine interdigital dermatitis
see ovine footrot.
ovine staphylococcal dermatitis
ulcerative dermatitis of the face of adult sheep and young lambs caused by a dermatopathic strain of Staphylococcus aureus. Called also ovine staphylococcal pyoderma.
pastern dermatitis
see greasy heel.
pelodera dermatitis
caused by larvae of the free-living nematode Pelodera strongyloides and characterized by alopecia, itching, thick, scurfy skin and 0.5 inch diameter pustules which contain the larvae.
photocontact dermatitis
allergic contact dermatitis caused by the action of sunlight on skin sensitized by contact with a substance capable of causing this reaction.
photosensitive dermatitis
plastic dish dermatitis
a contact dermatitis caused by plastic feeding dishes to which a dog is allergic.
porcine juvenile pustular psoriasiform dermatitis
see pityriasis rosea.
potato dermatitis
see potato dermatitis.
primary-irritant dermatitis
contact dermatitis (see above) induced by a substance acting as an irritant rather than as a sensitizer or allergen.
proliferative dermatitis
see strawberry footrot.
psoriaform, psoriasiform dermatitis of swine
see pityriasis rosea.
pyotraumatic dermatitis
see acute moist dermatitis (above).
dermatitis-pyrexia-hemorrhage syndrome
a pruritic, papulocrustous dermatitis in dairy cows which is accompanied by fever and hemorrage from the nose and anus. It is believed to be caused by a toxin.
rhabditic dermatitis
see pelodera dermatitis (above).
seasonal allergic dermatitis
seborrheic dermatitis, dermatitis seborrheica
a chronic, usually pruritic, dermatitis with erythema, dry, moist or greasy scaling, and yellow crusted patches on various areas, with exfoliation of an excessive amount of dry scales (dandruff) or encrustations of sebum on the skin. See also exudative epidermitis (pigs), greasy heel (horses), flexural seborrhea (cows).
solar dermatitis
a chronic, inflammatory reaction on white or lightly pigmented and exposed skin caused by sunlight. Most commonly seen on the ear tips, nose and eyelids of white cats and the nose of collie dogs or related breeds. Squamous cell carcinomas sometimes develop in affected skin. Called also nasal solar dermatitis, actinic dermatitis. See also collie nose.
spongiotic dermatitis
perivascular inflammation with spongiosis.
summer dermatitis
see equine allergic dermatitis.
superficial pustular dermatitis
immature dogs may develop pustules on the inguinal or axillary skin, often in association with poor nutrition, systemic infection, or parasitism. In kittens, these may occur on the neck, caused by 'mouthing' by the queen.
trefoil dermatitis
see trefoil dermatitis.
tyroglyphid dermatitis
see tyroglyphus.
unilateral papular dermatitis
a disease of horses characterized by the appearance of many nodules or papules on one side of the neck and body. The lesions are eosinophilic folliculitis and perifolliculitis. The etiology and the unilateral distribution of the lesions are unexplained.
ventral midline dermatitis
small ulcers with hemorrhagic crusts and hair loss, located on the abdomen, particularly around the umbilicus, of horses; caused by biting flies and gnats.
vesicular dermatitis
see avian vesicular dermatitis.
viral contagious dermatitis
see contagious ecthyma.
viral papular dermatitis
x-ray dermatitis
radiodermatitis.
allergic contact dermatitis
Allergic dermatitis Dermatology A condition caused by cell-mediated immunity due to contact with haptens–eg, nickel, chromates, ursodiols in poison ivy and poison oak, synthetic chemicals, drugs, cosmetics,
jewelry, neomycin ointment, etc, and may affect any body part Clinical Intense pruritus, erythema, intercellular edema, papulovesicles, which with continued exposure, are followed by vesiculation, rupture and oozing dermatitis Modifying
factors–host Genetic predisposition, age, route of 1º sensitization, and concomitant disease–eg, immunocompromise as in AIDS Modifying factors–environment Physicochemical modulation. Diagnosis Patch test Management Topical
corticosteroids. See Contact dermatitis, Patch test.
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