Optic neuritis in cat scratch disease

Area of Science:

• Ophthalmology
• Infectious Diseases
• Neurology

Background:

• Cat scratch disease (CSD) is a bacterial infection typically transmitted by cats.
• Neurologic manifestations of CSD can be diverse, including encephalopathy and optic nerve involvement.
• Optic neuritis, inflammation of the optic nerve, can lead to vision loss.

Observation:

• A patient presented with optic neuritis.
• Clinical findings included lymphadenopathy and a positive cat scratch antigen skin test.
• The patient had a history of cat exposure.

Findings:

• The clinical presentation strongly suggested a diagnosis of cat scratch disease.
• This case represents the fourth reported instance of optic neuritis associated with CSD.
• CSD can manifest with optic neuritis as a primary or associated neurologic symptom.

Implications:

• Early diagnosis and treatment of CSD are crucial to prevent permanent vision damage.
• Clinicians should consider CSD in the differential diagnosis of optic neuritis, particularly in patients with relevant exposure.
• Further research may elucidate the precise mechanisms linking CSD to optic neuritis.