Epidermolysis bullosa simplex in the Collie dog

Area of Science:

• Veterinary Dermatology
• Canine Pathology

Background:

• Epidermolysis bullosa simplex (EBS) is a group of inherited skin disorders characterized by blistering and skin fragility.
• Collie dogs are predisposed to various dermatological conditions, necessitating further investigation into specific genetic disorders.

Observation:

• Four Collie dogs presented with clinical signs of skin fragility, including alopecia, erythema, edema, erosions, ulcers, crusts, atrophy, and pigmentary changes.
• Lesions were predominantly observed over bony prominences and joints of the limbs, face, lips, and ears, with minimal to moderate pruritus or pain.
• Induced lesions in normal skin areas confirmed the diagnosis, highlighting the role of frictional trauma in exacerbating the condition.

Findings:

• Histologic examination of affected tissues and induced lesions confirmed the diagnosis of Epidermolysis bullosa simplex in all four Collie dogs.
• The disease onset was noted in three dogs before six months of age, indicating a potentially early-onset or congenital condition.
• Clinical signs included a range of dermatological manifestations, from hair loss and redness to severe erosions and blisters.

Implications:

• This case series highlights Epidermolysis bullosa simplex as a differential diagnosis for blistering skin diseases in Collie dogs.
• Understanding the clinical presentation and diagnostic confirmation is crucial for accurate identification and management of EBS in affected canines.
• Palliative therapeutic strategies, including prednisolone and trauma avoidance, provided limited relief, suggesting a need for further research into more effective treatments for canine EBS.