Introduction

• Inflammation of the periocular skin - see also blepharitis Blepharitis (inflammation of the eyelids).
• Cause: most commonly due to parasitic conditions (sarcoptic/demodectic mange, ringworm) or allergies.
• May also be secondary to ocular irritation or as part of a generalised seborrhoea Skin: primary seborrhea.
• Signs: periocular erythema, alopecia, self-trauma, generalised dermatitis.
• Diagnosis: clinical signs, skin scraping, intradermal skin test, mycology, response to hypoallergenic diet.
• Treatment: eliminate underlying cause.
• Prognosis: generally good.

Pathogenesis

Etiology

• Sarcoptic mange Skin: sarcoptic mange .
• Demodectic mange Skin: demodectic mange .

• Dermatophytosis (ringworm) Skin: dermatophytosis.

• Food Skin: food hypersensitivity.
• Atopy Skin: atopy.
• Drugs.
• Contact allergy Skin: allergic contact dermatitis.

• Seborrheic dermatitis Skin: primary seborrhea.

• Self-trauma.
• Reaction to ocular discharges.

• Toxic epidermal necrosis Skin: toxic epidermal necrolysis.
• Leishmaniasis.
• Zinc responsive dermatosis.
• Hepatocutaneous syndrome Hepatocutaneous syndrome.

Predisposing factors

• In contact with affected animal (parasites, dermatophytosis).

Diagnosis

Treatment

Outcomes