Ringworm in dog (Canine Ringworm)

Common info

Dermatophytosis or Ringworm is the cause of skin fungal infections in humans and animals such as cats, etc. The disease is derived from many fungi, it also causes parasite infection (Dermatophytes) which usually consume keratin, these fungi can grow well in a warm and moist environment.


Although eczema in cats is called ringworm but it doesn’t occur from worms or parasites from fungi. There are 40 types of fungi in classes of Trichophyton, and Epidermophyton, which can cause the disease. These fungi are called Dermatophytes, there’s a report from a Mycoses magazine in 2008 that body fungal infections (Tinea corporis), often derived from T. rubrum, M.canis or T. Tonsurans. Fungi from this group like to grow in a warm and moist environment just like any other group and can spread through direct contact with places that have fungi.


Ringworm Canine can spread through direct contact with infected skin of other animals, contacting with infected animals (e.g. cat, dog, pig, and cow), touching things and objects that are contaminated with fungi (e.g. clothes, towel, bed sheet, comb, chair, toilet), and soil that gets contaminated with fungi for a long period of time can cause Ringworm.


There are different symptoms for each infected area in Ringworm Canine. Common symptoms include :

  • Itchy skin
  • Red spots, flakes, and stretch marks on the skin
  • Circular-shaped rash
  • Hair loss on infected areas
  • Dry and brittle hair
  • Scab
  • Skin inflammation   
  • Brittle nails                                                                                   

Treatment and Prevention

Ringworm in dog can be cured by using antifungal drugs from pharmacies, it can a cream, gel, lotion, spray, power, or in any other forms such as Zeasorb, Daktarin or Lotrimin (miconazole), Canesten AF cream (clotrimazole), Nizoral, Xolegel or Extina (Ketoconazole), Oxistat (oxiconazole), and other antifungal drugs that can used for Ringworm such as jock itch and Athlete's foot or Hong Kong foot can used for Ringworm on the torso

  1. Wikipedia | Dermatophytosis
  2. AKC | Ringworm in Dogs
  3. CDC | Ringworm
  4. Honestdocs | โรคกลาก (Ringworm)
  5. Pet Web MD | Worms in Dogs
  6. VCA | Ringworm in Dogs
  7. Ernest E. Ward Jr., DVM. 2002. RINGWORM IN DOGS. written by Northpark -Animal Haspital. May 12 2002 : 1-3.
  8. R. A. Cervantes Olivares. 2003. Ringworm Infection in Dogs and Cats. International Veterinary Information Service (www.ivis.org), Ithaca, New York, USA. 24-Jun-2003 : 1-7.
  9. The University of Adelaide. 2015. Dermatophytes. [Online]. Available:http://ww.mycology.adelaide.edu.au.
  10. Yuri. 2012. Fun with microbiology. [Online]. Available:http://thunderhouse4-yuri.blogspot.com. โดย ภาควิชาจุลชีววิทยา คณะสัตวแพทยศาสตร์ จุฬาลงกรณ์มหาวิทยาลัย
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