Lymphangitis:

• Lymphangitis refers to inflammation of lymph vessels of animals.
• It is an infectious disease of cattle and horses characterized by formation of skin ulcers or lesion with involvement of lymph vessels of lower limbs.
• Bovine lymphangitis is also known as bovine farcy. Two forms of lymphangitis are common; ulcerative lymphangitis and epizootic lymphangitis

Epizootic Lymphangitis:

• It is a chronic and contagious disease of horses and other equids characterized clinically by spreading, suppurative, ulcerating pyogranulomatous dermatitis and lymphangitis.
• It is seen particularly in neck, legs and chest but can occur anywhere in body.
• It can also present as an ulcerating conjunctivitis, or more rarely, in a respiratory form with purulent nasal discharge, pyogranulomatous lesions around the nares with extension of involvement of the nasal lacrimal duct, and lower respiratory signs caused by multifocal pneumonia.

Etiology:

• Histoplasma capsulatum var. farciminosum
• It is thermally dimorphic, fungal soil saprophyte that persist in environment providing reservoir of infection.
• Transmission of disease occurs through contact with infected material with traumatized skin, biting flies, ticks or inhalation of spores.