ArticleBMC infectious diseases2026
Cranial nerve neuropathies: a rare manifestation of cat scratch disease.
Article in BMC infectious diseases, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- Cat-Scratch Disease Associated with Acute Hearing Loss, Israel.Emerging infectious diseases · 2026Article
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12 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundCranial nerve neuropathies represent a rare manifestation of cat scratch disease (CSD). Only a few case reports have been published, and the full clinical spectrum remains poorly characterized. We aimed to describe the clinical presentation, diagnostic approach, and prognosis of cat scratch disease (CSD)-associated cranial nerve neuropathies, a manifestation that is poorly characterized.
methodsUsing data from a national CSD surveillance study, we identified patients with CSD-associated cranial neuropathies confirmed by serology and/or PCR for Bartonella henselae. Clinical, epidemiological, and imaging data were analyzed. Follow-up was conducted.
resultsSeven immunocompetent patients with cranial nerve neuropathies were identified among approximately 4100 CSD patients diagnosed over a 28-year period (1997–2025). Affected cranial nerves included the facial (n = 3), abducens (n = 2), oculomotor (n = 1), and glossopharyngeal (n = 1) nerves, the latter two not previously reported in patients with CSD. All patients reported cat exposure. Neuropathies were accompanied by other CSD-related features, including fever (71%), lymphadenitis (57%), neuroretinitis (43%), and encephalitis (14%). Three patients received antibiotic therapy and five were treated with systemic corticosteroids. Six patients fully recovered within a median of 4 weeks; one patient showed marked improvement after 3 months and was subsequently lost to follow-up.
conclusionCSD-associated cranial neuropathies are rare and possibly underdiagnosed. Diagnostic clues include cat contact and concurrent CSD features such as fever, lymphadenopathy, or neuroretinitis. These findings are hardly observed in idiopathic cranial nerve palsies such as Bell’s palsy, for which guidelines recommend against routine serologic evaluation. Although outcomes are generally favorable, optimal treatment remains undefined. We suggest testing for B. henselae infection in patients with cranial neuropathies when CSD is suspected. Increased clinical awareness is warranted to facilitate timely diagnosis and management.
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