36715669
| Question | Answer |
| At what age does atopic dermatitis develop? | 1-3yo |
| How do you dx bacterial pyoderma? | Culture from intact pustule |
| How do you dx malassezia (pachydermatitis)? | tape impressions and culture |
| What are the 3 components of eosinophilic granuloma complex? | indolent ulcers eosinophilic plaques eosinophilic granuloma |
| How do you dx Scabies infection? | Skin scrapes and response to Tx with macrocytic lactones and isoxazolines |
| What sort of skin is at risk of squamous cell carcinoma? | thin, unpigmented skin as UV associated e.g. eyelids and ear tips |
| What do anal sac apocrine gland tumours tend to be? | Infiltrative and metastatic adenocarcinomas |
| What are the features of a fibrosarcoma? | Cellular and pleomorphic Rapid growth and infiltrative Non-metastatic |
| What are the features of a mast cell tumour in a dog? | Infiltrative Locally recur metastasise to local LNs paraneoplastic affects |
| What age of dogs tend to get pemphigus foliaceus? | 2-7yo |
| How do you dx pemphigus foliaceus in dogs? | Tzank prep of pustule reveals acantholytic keratinocytes |
| What is a pathognomonic sign of pemphigus in cats? | Thick, green, purulent discharge from the claw beds Claw itself = normal |
| How do you treat pemphigus in the cat and dog? | Immunosuppressive glucocorticoids (preds) cephalexin for secondary bacterial infection long term control = azathioprine (dogs) / chlorambucil (cats) |
| What causes canine discoid lupus? | Photosensitive dermatosis of the nasal planum (UV associated) |
| What are the key signs of Canine discoid lupus? | Hypopigmentation, loose cobbled nose, erythema, scaling |
| How do you treat canine DLE? | Topical glucocorticoid, sunblockers azothioprine / chloramphenicol |
| What organisms cause dermatophytosis? | Microsporum canis Trichophyton |
| How do you dx dermatophytosis? | Microscopy, culture, sabouraud's examination, woods lamp (only m.canis) |
| How do you treat dermatophytosis? | Itraconazole / ketoconazole topical miconazole shampoo environmental decontamination |
| What are the features of localised demodicosis? | <1yo, focal alopecia and erythema on legs and head, usually resolve w/o Tx |
| What are the features of generalised demodicosis? | Entire body or >5 local lesions Signifies underlying disease in adults (HAC, hypothyroid, lymphoma etc) |
| How do you tx demodicosis? | Amitraz, Isoxazoline, Ivermectin |
| What is the main complication of a TECA/LBO and why? | Para-aural abscess due to inadequate debridement of middle ear / cartilage |
| How do you treat otodectes cyanotis? | Selemectin and moxidectin Canaural / Surolan Clean ear prior to mite killing products |
| What are the signs of otitis media? | Facial nerve paralysis, horner's, hearing loss |
| What are the signs of otitis interna? | Head tilt Deafness Ataxia Circling Strabismus Nystagmus |
| Trombicula | |
| Sarcoptes | |
| Demodex | |
| Otodectes | |
| Dermatophytosis |
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