Pseudomonas aeruginosa is a major opportunistic pathogen in veterinary dermatology, responsible for often chronic, severe, and painful otitis and pyoderma. Its management is a constant clinical challenge due to its dual ability to form biofilms, true protective fortresses, and to develop multiple drug resistance (MDR). These strategies render conventional treatments ineffective and necessitate a rigorous, integrated therapeutic approach to hope for a lasting cure.

Pseudomonas aeruginosa est un pathogène opportuniste majeur en dermatologie canine, provoquant des otites et pyodermites chroniques et sévères. Sa redoutable efficacité repose sur sa capacité à former des biofilms protecteurs et à développer de multiples résistances aux antibiotiques, rendant les traitements complexes et souvent voués à l'échec sans une approche multimodale rigoureuse.

The emergence of methicillin-resistant staphylococci, particularly S. pseudintermedius (MRSP), has revolutionized veterinary dermatology. Canine pyodermas, once straightforward to treat, have evolved into a crisis of antibiotic resistance, rendering empirical treatments obsolete. This situation necessitates a new approach: systematic diagnosis through cytology before initiating any treatment, prioritizing topical therapy for superficial infections, and judicious use of systemic antibiotics based on susceptibility testing. Addressing the underlying cause, such as allergies, is essential to prevent recurrences. This issue is deeply embedded in the "One Health" approach, connecting animal and human health.