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Created page with '*Caused by ''Onchocerca'' spp. *Affects horses, cattle, donkeys, mules, sheep, goats *Transmitted by [[Insecta|Simulidae and Cerat…'
*Caused by [[Onchocerca spp.|''Onchocerca'' spp.]]
*Affects horses, cattle, [[Onchocerciasis - Donkey|donkeys]], mules, sheep, goats
*Transmitted by [[Insecta|Simulidae and Ceratopogonidae]]
*Hypersensitivity varies with individuals, may occur without any inflammation
*Grossly:
**Adult parasites within connective tissue nodules
**Microfilaria in dermis, especially ventral midline
**Patchy alopecia, erythema, scaling, crusting, change in pigmentation
**Circular areas of dermatitis on forehead appears in some horses
**May also involve keratitis, uveitis and conjunctivitis
*Microscopically:
**Normal to superficial to deep perivascular dermatitis
**Eosinophils, lymphocytes, microfilariae
*Affects horses, cattle, [[Onchocerciasis - Donkey|donkeys]], mules, sheep, goats
*Transmitted by [[Insecta|Simulidae and Ceratopogonidae]]
*Hypersensitivity varies with individuals, may occur without any inflammation
*Grossly:
**Adult parasites within connective tissue nodules
**Microfilaria in dermis, especially ventral midline
**Patchy alopecia, erythema, scaling, crusting, change in pigmentation
**Circular areas of dermatitis on forehead appears in some horses
**May also involve keratitis, uveitis and conjunctivitis
*Microscopically:
**Normal to superficial to deep perivascular dermatitis
**Eosinophils, lymphocytes, microfilariae