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Dermatology (EQ) > Parasitic skin disease > Flashcards

Parasitic skin disease Flashcards

1
Q

Lice (pediculosis) is more common in which season?

A

Winter

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2
Q

How is lice diagnosed?

A

Adults/eggs on hair brushings

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3
Q

How are lice treated?

A

Permethrin

Fipronil

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4
Q

What louse affects the mane, tail and fetlock of horses?

A

Haematopinus asini

sucking louse

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5
Q

What louse affects the dorsolateral trunk of horses?

A

Werneckiela

biting louse

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6
Q

How is mange (mites) diagnosed?

A

Skin brushings

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7
Q

How are mites treated?

A

Ivermectin course

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8
Q

Which mite is more common on distal limbs of draft breeds, causing intense itching and stamping? It is more common in Winter.

A

Chorioptes equi (breed specific)

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9
Q

Which mite is zoonotic and can cause a range of clinical signs, varying from affecting the head, neck and ears only to the entire body?

A

Sarcoptes scabiei

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10
Q

Which mite affects the forelock, mane and tail and trunk?

A

Psoroptes equi (breed specific)

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11
Q

Which mite causes papule with small organs or red larvae in the centre? Found on face, distal limbs, ventral Thorax and abdomen?

A

Trombicula autumnalis

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12
Q

Which mite is rare on horses and may suggest the horse is immunosuppressed?

A

Demodex

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13
Q

Which mite is found on the head and legs, and treatment includes removing birds?

A 
Dermanyssus gallinae
(Poultry mite)
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14
Q

When are ticks most common?

A

Spring/Summer

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15
Q

What is the treatment for ticks?

A

Fipronil
Ivermectin
Topical pyrethrin

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16
Q

Which nematode lives in the nuchal ligament, with microfilarie migrating causing hypersensitivities?

A

Onchocerca cervicalis

17
Q

What is the treatment for Onchocerca cervicalis? When is it more common?

A

Ivermectin
Prednisolone - for hypesensitivty
Spring/Summer

18
Q

What is Habronemiasis? How is it treated?

A

Ulcerative nodules in skin due to flies or larvae

Ivermectin + steroids

19
Q

Which nematode causes perianal pruritus? How is it diagnosed and treated?

A 
Oxyuris equi (pinworm)
Dx cellotape
Tx anthelmintics and washing of area
20
Q

How is dermatophytosis treated?

A

Antifungals - topical

21
Q

What fungi cause dermatophytosis?

A

Trichophyton spp

Microsporum spp

22
Q

What fly causes nodules on the neck or trunk, with a central pore? They are often painful

A

Warbles

Hypoderma bovis/lineatum

23
Q

How are warbles/Hypoderma lineatum/bovis nodules treated?

A

Surgical removal

Dermatology (EQ) (5 decks)

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