Causes
Excess oil production, poor chin hygiene, plastic food bowls (which harbour bacteria), stress, allergies.
Diagnosis
Visual examination. The vet will rule out infection, fungi or mites if the case is severe.
Treatment
Mild cases: gentle cleaning of the chin, and swapping the plastic bowl for ceramic or steel. Infected cases: topical or oral treatment as directed by the vet.
Prevention
Ceramic or stainless steel bowls (not plastic), washing them daily, and good chin hygiene.

