Cat Grooming Behaviour and Overgrooming Welfare

Overgrooming in cats, leading to hair loss and skin irritation, can arise from both physical causes including allergy and parasites, and psychological causes including anxiety and chronic stress.

Key Facts

Psychogenic alopecia from overgrooming is estimated to account for less than 5% of alopecia cases — physical causes are far more common.
Flea allergy dermatitis and atopic dermatitis are the most common physical causes of over-grooming and hair loss in cats.
Cats that overgroom due to stress typically groom in private, making the behaviour difficult to observe directly.
Trichobezoars (hairballs) become more problematic in overgrooming cats due to excessive hair ingestion.
Validated anxiety scales for cats can help distinguish stress-related overgrooming from dermatological disease.

Welfare Considerations

Overgrooming regardless of cause represents a welfare problem — either chronic physical discomfort from dermatological disease, or psychological distress sufficient to drive self-directed repetitive behaviour. The common assumption that alopecia in cats is psychogenic results in treatment failures and continued suffering when physical causes are not properly investigated. Thorough dermatological investigation before assuming psychological cause is an important welfare safeguard.

What You Can Do

Seek full dermatological investigation including skin scrapes, allergy testing, and diet trial before attributing alopecia to anxiety.
Ensure year-round flea prevention with prescription-strength products as a baseline investigation step.
Assess your home environment for stressors if physical causes are excluded — litter box provision, cat conflict, and territory threats.
Consult a feline behaviour specialist if psychological causes are confirmed — environmental modification and sometimes medication are effective.