Parasitic skin infections - Pathology
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Flea Dermatosis
Fly Dermatosis
Myiasis
Helminths
Habronemiasis, Cutaneous
Hookworm Dermatosis
Onchocerciasis
Stephanofilariasis
Lice
Mites
Cheyletiellosis
Chorioptic Mange
Demodicosis
Notoedric mites
Otodectic Dermatosis
Psoroptic Mange
Scabies
Trombiculidiasis
Protozoal Dermatosis
Ticks
- Local reaction depends on host hypersensitivity and tick's secretions
- Grossly:
- Focal erosions, erythema, crusted ulcers, sometimes alopecia and nodules
- Microscopically:
- Epidermal and dermal necrosis
- Perivascular of diffuse inflammation and necrotic margins
- Eosinophils, macrophages and lymphocytes in exudate
- May form granulomas containing collagenous fibres and lymphoid follicles within dermis