Malassezia dermatitis in dogs and cats

Area of Science:

• Veterinary Dermatology
• Mycology
• Canine and Feline Health

Background:

• Malassezia yeasts are normal skin inhabitants in dogs and cats.
• Overgrowth can lead to secondary skin and ear conditions like Malassezia dermatitis, otitis externa, and paronychia.
• Allergic dermatitis is a common underlying condition triggering Malassezia proliferation.

Purpose of the Study:

• To review the clinical presentation, underlying causes, and diagnostic approaches for Malassezia dermatitis in dogs and cats.
• To discuss current and emerging treatment strategies, considering antifungal resistance.
• To provide an evidence-based perspective for veterinarians managing this condition.

Main Methods:

• Evidence-based narrative review of existing literature.
• Analysis of clinical presentation and diagnostic techniques.
• Discussion of treatment options based on scientific evidence and clinical experience.

Main Results:

• Malassezia dermatitis is characterized by chronic, relapsing, and pruritic symptoms.
• Direct cytology is a rapid and reliable diagnostic tool, identifying characteristic "peanut-shaped" budding yeasts.
• Topical treatments are primary, with systemic antifungals reserved for severe cases.

Conclusions:

• Identifying and treating the underlying cause of Malassezia dermatitis is crucial for successful management.
• Antifungal resistance is an emerging concern, necessitating careful treatment selection.
• A comprehensive approach combining diagnostics and targeted therapy improves outcomes for affected animals.