Dog Skin Disease: Allergies and Atopic Dermatitis

Atopic dermatitis and allergic skin disease are among the most common chronic conditions in dogs, causing persistent itching, discomfort, and secondary infections that significantly impact quality of life.

Key Facts

Canine atopic dermatitis (CAD) affects an estimated 10-15% of all dogs, with breeds including West Highland White Terriers, Bulldogs, and Golden Retrievers at particularly high risk
CAD is an immune-mediated inflammatory skin condition triggered by environmental allergens such as dust mites, pollens, and mould spores
Dogs with CAD experience intense pruritus (itching) that drives scratching, chewing, and rubbing, causing secondary skin damage, hair loss, and infection
Food allergies affect approximately 10-15% of allergic dogs and can mimic or exacerbate atopic dermatitis
Treatment options include Apoquel (oclacitinib), Cytopoint (lokivetmab), ciclosporin, allergen-specific immunotherapy, and fatty acid supplementation

Welfare Considerations

Chronic allergic skin disease causes persistent and sometimes severe suffering in affected dogs. Constant pruritus disrupts sleep, reduces play and social behaviour, and drives self-trauma through relentless scratching and chewing. Secondary pyoderma (skin infection) adds bacterial pain and systemic illness. Many dogs with CAD are inadequately treated due to cost, owner recognition barriers, or underestimation of the pain and distress involved. Quality-of-life assessment for allergic dogs should include pruritus scoring, sleep quality, activity levels, and owner-reported behaviour changes. Effective management requires accurate diagnosis, trigger avoidance where possible, and evidence-based pharmaceutical control of itch and inflammation.

What You Can Do

Seek veterinary diagnosis early if your dog shows persistent scratching, licking, or skin changes — early treatment improves outcomes
Work with a veterinary dermatologist for refractory cases to identify specific allergens through intradermal testing
Support breed health schemes that reduce selection for features associated with atopic dermatitis risk
Maintain regular flea control, as flea allergy dermatitis exacerbates atopic disease significantly
Ensure dogs with chronic skin disease receive regular welfare assessments that document quality-of-life impacts, not just physical lesions