CANINE EOSINOPHILIC FOLLICULITIS AND FURUNCULOSIS IN 3 CASES

The historical, clinical and histopathological features of three dogs with eosinophilic folliculitis and furunculosis are described, The dis ease was characterised by the rapid development of pruritic, papular, pustular and ulcerative lesions on the dorsum of the muzzle. Skin lesi ons were confined to the face in two cases. The third dog had more gen eralised pustular lesions, Skin biopsy specimens showed marked eosinop hil infiltration particularly centred on pilosebaceous units, Dermal c ollagen necrosis was evident in two cases. Similar facial lesions have previously been described as 'nasal pyoderma'. The three dogs failed to respond to initial antibacterial therapy but showed a rapid clinica l:response when prednisolone was given orally at doses ranging from 1 to 2.2 mg/kg, in addition to the antibacterial therapy, suggesting tha t glucocorticoids are indicated for the treatment of eosinophilic foll iculitis and furunculosis. The aetiology of the disease was not determ ined.