Dermatophytosis Ringworm

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DermatophytosisRingworm
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Dermathophytosis

• 1. Microsporum
• Dogs, cats and people
• 2. Trichophyton
• Dogs, cats, horses, cattle and humans
• 3. Epidermophyton
• Humans

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DermatophytePathology

• These fungi infect the keratinized tissues, nail,
  hair and stratum corneum.
• Nail bed infections are difficult to cure
• Natural infection is usually by direct or
  indirect contact with carrier animals.
• The organism can survive in the environment for
  an extended period of time.
• Young animals are more susceptible than adults.

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DermatophyteSymptoms

• Skin lesions begin as focal, round alopecic
  (hairless) areas. The lesions later can become
  thickened, reddened and depigmented.
• The lesions generally are not puritic (itchy)
• Seen more commonly in hot, humid climates.
• Often seen where tack touches horses skin

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RingwormDermatophytosis
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RingwormBovine
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Canine Dermatophyte
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DermatophyteNasal Lesion
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Diagnosis

• 1. Areas of folliculitis
• 2. Woods lamp
• 3. Hair shaft examination
• 4. Fungal Culture
• 5. biopsy

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Burton Woods Light
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Wood Light

• Only around 50 of M. Canis fluoresce

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Woods LampM. Canis
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Dermatophyte DiagnosisM. Canis
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Dermatophyte On hair shaft After KOH
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Treatment

• 1. Oral Antifungal Medication
• Griseofulvin, Ketoconazone, Fluconazone
• Antifungal Shampoos
• 3. Vaccinations ???

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Oral Medications
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Lime Sulphur
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Ringworm is Zoonotic