Fungal Diseases

4-H Veterinary ScienceExtension Veterinary Medicine

Texas AgriLife Extension ServiceCollege of Veterinary Medicine and Biomedical Sciences

Texas A&M Systemhttp://aevm.tamu.edu

Objectives

Describe dermatophytosis Describe dermatophilosis Describe mycoses List the systemic mycotic diseases

Remember Five infectious diseases

Bacterial Viral Fungal Parasitic Rickettsial

Infectious disease An illness due to a specific infectious agent or its

toxic products that arises through transmission of that agent or its products from an infected person, animal or reservoir to a susceptible host, either directly or indirectly

Overview

Fungi Microorganisms that can infect various tissues of

animals Called

Mycoses Mycotic infections Fungal infections

Single organism – fungus Multiple organisms – fungi Affect

Superficial skin Various body systems

Skin

Dermatophytosis Aka ringworm Infects skin of

Dogs Cats Horses Cattle pigs Humans Sheep Goats

Transmission Direct contact

Fomites: (any inanimate object or substance capable of carrying infectious organisms)

Soil Bedding Carpet Furniture Tack Blankets Brushes Clippers

Infected animals Humans

Young are most susceptible Symptoms

Characteristic lesions Hair loss Scaly around loss Circumscribed edges Raised and reddened Pruritus

Diagnosis Skin scrapings Culture

Treatment Spontaneous recovery Prevent spread

Dermatophilosis Aka Rain Gall Cutaneous (skin) Infects

Horses Cattle Sheep Goats

Transmission Vectors

Biting flies

Exudative dermatitis Symptoms

Scabs Raised, crusty lumps covered with hair

“Paintbrush lesion” Develop

Lower legs Chest Back Hips

Diagnosis Cultures Biopsies Skin scrapings

General

Systemic mycoses Infect body systems

Cutaneous Respiratory Digestive

Diagnosis Radiographs Culture Serology Skin immunologic tests

Diseases Aspergillosis Candidosis Coccidioidomycosis Histoplasmisis Blastomycosis Sporotrichosis