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EQUINE-ICBP > Integumentary > Flashcards

Integumentary Flashcards

(62 cards)

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1
Q

general term for any type of skin inflam

A

dermatitis

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2
Q

dermatitis factors

A
  1. bacterial infxn
  2. external irritants
  3. trauma
  4. allergens
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3
Q

skin is thickest and thinnest at

A

thickest - dorsal part (dorsal neck, thorax, base of tail)
thinnest - ear, inguinal, axillary, perineal

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4
Q

3 stages of hair cycle

A
  1. anagen - growing
  2. catagen - intermediate
  3. telogen - resting phase
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5
Q

shedding pattern of horses

A

mosaic

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6
Q

vestigial appendage and small mass of cornified tissue located on the tuft of hair on the flexor surface of fetlock

A

ergot (2nd and 4th digit)

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7
Q

sensation to lick, chew, scratch; leads to lichenification

A

pruritis

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8
Q

dz causing pruritic dermatoses

A

pediculosis
mange
pinworm
insect hypersensitivity

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9
Q

causative agent of pediculosis (common in sick, debilitated, old)

A
  1. Haematopinus asini - sucking lice; pastern, tail, mane; bigger
  2. Damalinia equi - chewing lice; biting more active and smaller; trunk
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10
Q

T/F: sucking louse are more active than biting louse

A

F

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11
Q

T/F: pediculosis is zoonotic

A

F

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12
Q

pediculosis tx

A
  1. ivermectin - given for 3 mos, every 2 wks
  2. lime sulfur
  3. pyrethrin
  4. malathion
  5. coumaphos
  6. pyrethroid
  7. permethrin
  8. imidacloprid
  9. fipronil
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13
Q

T/F: scabies is more notifiable than pediculosis

A

T

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14
Q

causative agent of mange/acariasis

A
  1. Sarcoptes - body mange; zoonotic; most severe
  2. Chorioptes - leg mange; less severe; more common; nonzoonotic
  3. Psoroptes - mane mange; nonzoonotic
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15
Q

T/F: Chorioptes is less severe but more common in draft horses and similar to scabies

A

T

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16
Q

causative agent of demodicosis

A

Demodex - self-limiting; occurs in immunocompromised; rare

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17
Q

red mite of poultry

A

Dermanyssus gallinae - active and skin scraping at night

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18
Q

horse pinworm

A

Oxyuris equi - causes intense anal pruritis
- eggs not detected during fecalysis; do scotch tape method

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19
Q

insects preferred place for breeding?

A
  1. mosquito* and biting midges* - stagnant water; lateral side
  2. blackflies - flowing water
  3. horn flies - fresh cattle feces
  4. stable and house flies - decaying vegetation, matter
    *active during night (others during daytime)
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20
Q

biting midges can cause

A

Queensland itch or summer itch

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21
Q

tx for insect hypersensitivity

A
  1. corticosteroid
  2. hydroxyzine hydrochloride - for urticaria; antihistamine
  3. permethrin and pyriproxyfen
  4. pyrethrin and pyrethroid
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22
Q

cutaneous drug interactions

A
  • penicillin
  • streptomycin
  • oxytetracycline
  • neomycin
  • chloramphenicol
  • sulfonamides
  • phenothiazines
  • phenylbutazone
  • guaifenesin
  • aspirin
  • glucocorticoids
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23
Q

causes of scaling and crusting dermatoses

A

dermatophilosis
dermatophytosis

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24
Q

also known as rain scald

A

dermatophilosis - caused by Dermatophilus congolensis

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25
tx and pre-req for dermatophilosis to multiply
tx - wound management prereq - moisture and trauma to skin
26
most common contagious skin dz in horses
dermatophytosis/ringworm
27
causative agent of dermatophytsosis
Tricophyton equinum, T. metagrophytes, Microsporum gypseum, M. canis - self-limiting - potential zoonosis
28
T/F: wood's lamp is practical in horses
F
29
tx for dermatophytosis
* miconazole * lime sulfur * chlorhexidine * dilute bleach solution * griseofulvin * itraconazole * sodium iodide
30
dz characterized by papules and nodules
botryomycosis Corynebacterial infxn ulcerative lymphangitis sporotrichosis sarcoids melanomas eosinophilic granuloma complex
31
bacterial granuloma causing grape-like nodules
botryomycosis
32
causative agent of botryomycosis
S. aureus - main fungi
33
also known as pigeon fever
Corynebacterial infxn - caused by Corynebacterium pseudotuberculosis
34
mechanical vectors of pigeon fever
horn flies - Haematobia irritans
35
tx of pigeon fever
1. surgical drainage 2. procaine penicillin 3. wound managament
36
2 forms of sporotrichosis
1. yeast - cigar-shaped 2. mold
37
causative agent of sporotrichosis
Sporothrix schenkii
38
tx for sporotrichosis
sodium iodide
39
most common skin tumor and is locally invasive fibroblastic neoplasm
sarcoid
40
suspected causative agent of sarcoids
bovine papillomavirus
41
sarcoid histophathology
whirls of fibroblast
42
types of sarcoids
1. occult - flat and circular; benign neglect 2. verrucous - warts; benign neglect 3. fibroblastic - proud flesh
43
sarcoid tx
1. surgical debulking 2. BCG vax 3. cisplatin 4. flumeg and prednisone
44
breed predilection of melanoma
Arabian and Percheron - gray horses
45
T/F: melanoma has no tx
T - but can use cimetidine
46
for regression of tumors
cimetidine
47
most common nodular dz
eosinophilic granuloma complex - common in neck, trunk, back; saddle area - can calcify due to chronic irritation; rock-like texture
48
causes of eosinophilic granuloma
insect bites or environmental allergens
49
other term for eosinophilic granuloma complex
eosinophilic granuloma w/ collagen degeneration, nodular necrobiosis of collagen, or collagenolytic granuloma
50
tx for eosinophilic granuloma complex
corticosteroid antibiotics surgery (chronic)
51
mucocutaneous vesicular disorder
1. equine herpes coital exanthema 2. vesicular stomatitis
52
causative agent of equine herpes coital exanthema
EHV-3 (stress-induced)
53
MOT of equine herpes coital exanthema
coitus insect fomite inhalation
54
other term for vesicular stomatitis (Rhabdovirus)
sore nose, sore mouth
55
serotypes of vesicular stomatitis
New Jersey, Indiana
56
necrotizing skin disorder
decubital ulcer
57
other term for decubital ulcer
pressure sores, setfasts, saddle galls, saddle sores
58
decubital ulcer may develop from
- poorly fitting tack - prolonged recumbency - tight bandages
59
skin congenital disorder
epitheliogenesis imperfecta dermoid sinuses dentigerous cyst
60
other term for epitheliogenesis imperfecta
aplasia cutis
61
dermoid sinuses is common in _________
Thoroughbred
62
other term for dentigerous cyst
periauricular cyst

EQUINE-ICBP (2 decks)

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