Microsporum canis is a zoophilic dermatophyte that primarily parasitizes the skin of pets such as cats and dogs. It can exist long-term in animals without causing disease, but once it infects humans, it may cause damage to the skin or hair, affecting human health.
Infection Manifestations
In humans, Microsporum canis infections often present as localized, superficial infections, such as tinea capitis (head ringworm), tinea corporis (body ringworm), tinea pedis (athlete’s foot), and tinea unguium (nail ringworm). Children and individuals with compromised immune systems are susceptible populations. With the increasing number of pet owners, the incidence of Microsporum canis infections is rising year by year.
In animals, infections manifest as varying degrees of scaling, multifocal alopecia, and erythema.
Treatment Methods
The treatment of Microsporum canis infections usually includes oral antifungal medications, such as fluconazole, griseofulvin, itraconazole, ketoconazole, and terbinafine. Additionally, topical ointments can be used. Treatment needs to be sustained for a period of time, sometimes even for more than six months, to ensure a complete cure.
Antifungal Resistance
It is noteworthy that the resistance of Microsporum canis to antifungal drugs is gradually increasing, which is related to the improper use of antifungal medications. The mechanisms of resistance mainly include biofilm formation, target site mutation, decreased intracellular drug levels, and stress response. Therefore, combination therapy or the development of new drugs may be required during treatment.
Preventive Measures
Preventive measures for Microsporum canis infections include:
- Maintaining the cleanliness and health of pets
- Avoiding contact with infected animals
- Practicing good personal hygiene
If you have pets at home, it is very important to regularly check and treat them as necessary.
Original article by KPTer, if reproduced, please cite the source: https://www.kaipet.com/en/microsporum-canis
