Epizootic lymphangitis in horses: a review of the literature
Ulcerative lymphangitis
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Transcript of Ulcerative lymphangitis
Ulcerative Lymphangitis
Synonym : Ulcerative cellulitis Caseous lymphadenitis
It is an infectious disease of cattle and horse characterized by formation of
skin ulcers with involvement of
lymph vessels of lower limbs.
Etiology : Corynebacterium pseudotuberculosis The organisim is Pleomorphic, non motile, non-spore forming, non-capsulated, gram positive rod Corynebacterium equi Psudomonas aeruginosa
Corynebacterium pseudotuberculus
Susceptible Hosts: Primarily – a disease of horse But sometimes
Also occurs in cattle
Ulcerative lymphangitis
Transmission and pathogenesis: Disease is related to soil
contamination. Organisim may remain on skin as
contaminants. Through abrasion or skin injuries –
invade the tissues , multiply – invade the lymphatic vessels – formation of abscess.
Clinical findings: The disease is sporadic in nature and
spreads slowly. It begins as a moderate diffuse swelling
on one or both the limbs causing lameness.
Nodules formed on the legs break down leading to the formation of ulcers.
Thick greenish exudate mixed with blood appear from such ulcers.
Diagnosis:1. Clinical findings.2. Isolation and identification of the
organisims.
Treatment:1. A course of antibiotic, preferably
penicillin @ 4000 – 8000iu /kg BW.i/m daily x 5 days
2. Surgical drainage of pus material.
3. Daily dressing of wound.
Control: Strict hygiene and sanitation.
Regular grooming of animals.
Prompt care and treatment of limb injuries.
Sporotrichosis :Sporotrichosis is a contagious disease
of horses characterized by
the development of cutaneous nodules and ulcers on the limbs
and may or may not be accompanied by lymphangitis.
Etiology : Sporotrichum schenckii Gram positive fungus Infection spreads directly through
contaminated soil or decaying plant materials.
Infection may spread through direct contact with infected animals.
Pathogenesis : Local invasion through cutaneous
wounds results in the development of abscess and discharging ulcers.
Clinical findings: Multiple , small cutaneous nodules
develop on the lower parts of the legs, usually about the fetlock.
The nodules are painless, develop a scab on the summit, discharge a small amount of pus and heal in 3-4 weeks.
Diagnosis :1. Clinical symptoms.2. Isolation and identification of the
organisim.3. Gram positive spores in the
disharges.
Treatment :1. Local application of tincture iodine daily on ulcers –
dressing.2. Oral administration of potassium iodide is beneficial.
Potassium iodide @ 2 – 3g/100kg (4 – 8g/animal) daily orally for 10 to 14 days.
1. Or , sodium iodide (10%)solution@1gm/40kg BW or,2. sodium – iodide @ 15 – 30 gms
in 250 – 500 ml distilled water i/v at weekly interval for a month.
Or, Griseofulvin @7.5-10mg/kg BW/day for 30 days