Pênfigo foliáceo em um equino

Abstract

Pemphigus is the most common autoimmune disease in horses. Being described three varieties of pemphigus: pemphigus foliaceus, paraneoplastic and vulgar. Clinically, it is characterized by erosive or crusted circular lesions with or without the presence of an epidermal “collar”, alopecia and varying degree of exudation and scaling, ventral abdominal edema, pain and pruritus. The objective of this study is to report a case of pemphigus foliaceus in a six-year-old female crossbred horse. Presenting as main complaint generalized dermatitis. Clinically the mare was apathetic with pectoral and conjunctival edema. She presented generalized hair loss, intense seborrhea and areas of hyperkeratosis, mainly in the ear regions. In addition to areas of alopecia on the face and pelvic limbs, metatarsal regions, eyelid edema and bilateral tearing. Skin biopsy was performed in four cervical, mandibular, scapular and gluteal regions. In the histopathological of the skin was diagnosed as pemphigus foliaceus. Dermatological examinations performed on this animal have ruled out other dermatological disorders common in horses. Thus, it can be concluded that the histopathological examination is of great importance for the definitive diagnosis of the disease in question, since it can be confused with other dermatopathies.