PART 7 Flashcards
(25 cards)
insect hypersensitivty other term
causative agent
- this one prefers what side
this flies prefer VENTRAL part of abdomen
Mosquitoes
Prefer lateral side of bodies
Prefer stagnant water
Biting midges (Culicoides)
Queen’s land itch
Summer itch
Sweet Itch
Blackflies (Simulium)
Prefer flowing water
Horseflies (Tabanidae)
Horn flies (Haematobia irritans)
Prefer ventral part of abdomen
Breed specifically in freshly laden cattle feces
Stable flies (Stomoxys)*
Houseflies*
*Decaying matter or vegetation
Bees
Wasps
is insect hypersensity seasonal? y/n
y
breeding areas
Mosquitoes and biting midges :
Black flies:
Horn Flies:
Stable and house flies:
Mosquitoes and biting midges : stagnant water
Black flies: flowing water
Horn Flies: breed in fresh cattle feces
Stable and house flies: decaying vegetation, matter
all insects mentioned are active during the day t/f
f - mosq and biting midges NOT ACTIVE during day
tx of insect hypersens
Corticosteroids
If antihistamine is ineffective
Hydroxyzine hydrochloride
Allergies, urticaria in horses
Antihistamine
Permethrin and pyriproxyfen
Pyrethrins and pyrethroids
aside from parasites, these meds have been associated with pruritic diseases
cutaneous drug interaxn
what are the drugs involved in cutaneous drug interaxn
Penicillin
Streptomycin
Oxytetracycline
Neomycin
Chloramphenicol
Sulfonamides
Phenothiazines
Phenylbutazone
Guaifenesin
Aspirin
Glucocorticoids
Diagnosis
Some would recommend _______allergic reaction by administering these drugs
High risk due to induced _____
Withdraw the drug and observe if CS goes away
inducing
anaphylaxis
Also known as rain scald
causative agent
DERMATOPHILOSIS
Dermatophilus congolensis
rain scald prereqs for multiplication
Moisture = rain scald
Trauma to skin
main tx for rain scald
wound managenemnt
Lime sulfur**
Benzyl peroxide*
Chlorhexidine*
Available in *shampoo preparation and **dips
most common contagious disease in horses
Easily transferred from one to another
Known as ringworm
dermatophytosis
most common isolates of ringworm
Trichophyton equinum
T. mentagrophytes
Microscoporum gypseum
M. canis
ringworm is ____ and _____
selflimiting and zoonotic
lesions of ringworm
sample is collected at the ___ of hair
Scaling
Circular areas
periphery of lesions
DIAGNOSIC test for ringworm but NOT practical in horses
woods lamp
tx of ringworm
Miconazole
w/ chlorhexidine
As shampoo
Same with dogs
Lime sulfur
Dilute beach soln
1:10 dilution in water
Less expensive option
With characteristic odor
Systemic antifungals
Generally more expensive than topical tx
systemic drugs used in ringrowm tx
Griseofulvin*
Itraconazole*
Sodium iodide*
*Systemic drugs
May induce abortion
Begin as traumatic injuries from which an Infectious organism will be Inoculated in the dermis
bacterial granulomata
causative agen
Botryomycosis
Botryo: grapes; Grape-like nodules
staph aureus
botryo test
fungal/bacterial culture
Aka pigeon fever
Spread by Horn flies (Haematobia irritans)
causative agent
Corynebacterial infections
Corynebacterium pseudotuberculosis
coryne:
Breast muscles
Pigeon fever
Breast looks like a pigeon
Inflammation and abscesses
Drain purulent material - whitish/greenish in color
Sample for culture
During summer or fall
abscesses
coryne:
Inflammation of lymph vessels
Along lymph vessels, there are nodules → ulcers
Problem: disfiguration of animal especially in limbs
More on fetlocks
Performance gravely affected
ulcerative lymphangitis
coryne tx
procaine penicillin (large doses( + wound mgt
surgical draianage
- Wait for abscess to mature
Hasten maturation of abscess by applying warm compress → surgically incise abscess
