Dermatological quiz

What bacteria causes this infection

Streptococccal dermatitis

What are the signs of streptococcal dermatitis

Mild to moderately painful skin infections and abscesses

How is streptococcal dermatitis daignosed

Based on culture and clinical features

How is stretococcal dermatits treated

• Sensitive to penicillin

• Drainage of abscesses

• Topical antimicrobial washes in superficial infections

What are the signs of staphylococcal dermatitis

• Pain

• Localised exudative dermatitis

• Focal lesions

What are the clinical syndromes of staphylococcal dermatitis

• Pyoderma

• Saddle rash

• Pastern folliculitis

• Wound infections

• Abscesses

What bacteria causes this

Staphylococcal dermatitis

How is staphylococcal dermatitis treated

• Clipping hair

• Antiseptic washes

• Drainage of abscesses

• Systemic antimicrobials

What causes rain scald

Dermatophilus congolensis

What bacterial infection causes this

Dermatophilus congolensis

What areas are effected by Dermatophilus congolensis

Back, head and neck

What is this

Dermatophilosis

How is dermatophilosis diagnosed

• Direct smears

• Culture

How is dermatophilosis treated

• Remove to dry environment

• Remove matted hair and crusts

• Antimicrobial washes

• Systemic antimicrobials

What is ringworm

Dermatophytosis

What fungi cause dermatophytosis

• Trichophyton equinium var. equinum

• Trichophyton verrucosum

• Microsporum gypseum

• Microsporum equinum

What are the signs of dermatophytosis

• Small circular patches of hair sticking up

• Accumulation of keratinsied squames

• Bald patches

How does dermatophytosis heal

Centrifugally from centre of lesions

What is this

Dermatophytosis / ringworm

How is dermatophytosis / ringworm diagnosed

• Skin scraping

• Hair pluck

• Culture

• PCR

How is dermatophytosis and ringworm treated

• Isolate

• Self limiting 5-10 weeks

• Topical treatment

What is this

Alternaria spp.

What is this

Blastomycosis

What is this

Epizootic lymphangitis

What is this

Viral Papilloma / grass warts

How is viral papilloma treatment

Spontaneous resolution

What is this

Pinnal acanthosis / Aural plaques

What transmits Pinnal acanthosis

Simulium spp. (black flies)

What is this

Coital exanthema

What causes coital exenthema

EHV-3

What are the signs of coital exanthema

• Rapidly developing papules on penis, vulva and perineum

• Mildly pruritic

How is coital exanthema treated

Stop breeding for 3 weeks after lesions healed

What is this

Occult sarcoid

What is this

Verrucose sarcoid

What is this

Nodular sarcoid

What is this

Fibroblastic sarcoid

What is this

Mixed sarcoid

What is this

Malignant sacroid

How do you diagnose a sarcoid

Histology

How do you treat sarcoids

• Surgery

• Cyro

• Laser

• Cytotoxins

• Antimicrobials

• Radiation