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Peer-reviewed veterinary case report

Medical causes found in cats with hair loss thought to be

By Waisglass, Stephen E et al.·Published in Journal of the American Veterinary Medical Association·2006·Dermatology and Behavioural Referral Service of the Doncaster Animal Clinic, Canada·View original on PubMed

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Original publication title: Underlying medical conditions in cats with presumptive psychogenic alopecia.

Species:
cat

Plain-English summary

A group of 21 adult cats with hair loss were evaluated for underlying medical issues before being diagnosed with psychogenic alopecia (a behavior-related condition). After thorough testing, it was found that 76% of the cats had medical causes for their itching and hair loss, such as food allergies or skin infections. Only 10% had psychogenic alopecia without any other medical issues. This suggests that many cats may be misdiagnosed with a behavioral problem when there are actually treatable medical conditions involved.

People also search for: cat hair loss causes · cat itching treatment · food allergies in cats · psychogenic alopecia in cats

Abstract

OBJECTIVE: To identify underlying medical conditions in cats with a presumptive diagnosis of psychogenic alopecia. DESIGN: Case series. ANIMALS: 21 adult cats referred with a presumptive diagnosis of psychogenic alopecia. PROCEDURES: A detailed behavior and dermatologic questionnaire was completed by the primary caregiver, and complete behavioral and dermatologic examinations were performed. A standard diagnostic testing protocol that included cytologic examination of skin scrapings, fungal culture of hairs, evaluation of responses to parasiticides and an exclusion diet, assessment for atopy and endocrinopathies, and histologic examination of skin biopsy specimens was used to establish a definitive diagnosis in all cats. Cats that did not respond to an elimination diet were treated with methylprednisolone acetate to determine whether pruritus was a factor. RESULTS: Medical causes of pruritus were identified in 16 (76%) cats. Only 2 (10%) cats were found to have only psychogenic alopecia, and an additional 3 (14%) cats had a combination of psychogenic alopecia and a medical cause of pruritus. An adverse food reaction was diagnosed in 12 (57%) cats and was suspected in an additional 2. All cats with histologic evidence of inflammation in skin biopsy specimens were determined to have a medical condition, but of 6 cats without histologic abnormalities, 4 had an adverse food reaction, atopy, or a combination of the 2, and only 2 had psychogenic alopecia. CONCLUSIONS AND CLINICAL RELEVANCE: Results suggest that psychogenic alopecia is overdiagnosed in cats. Thorough diagnostic testing should be done before ascribing a behavioral cause to hair loss in cats.

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Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/16740071/