Distinguishing Susac's syndrome from multiple sclerosis

Area of Science:

• Neurology
• Ophthalmology
• Audiology

Background:

• Susac's syndrome is a rare neurological disorder.
• It is often considered in the differential diagnosis of multiple sclerosis (MS).
• Recent advances have improved differentiation between Susac's syndrome and MS.

Purpose of the Study:

• To discuss the clinical features of Susac's syndrome.
• To emphasize diagnostic findings and investigations that differentiate it from MS.
• To highlight the importance of a careful history and MR imaging.

Main Methods:

• Review of clinical features of Susac's syndrome.
• Analysis of diagnostic investigations including MR imaging, CSF examination, fluorescein angiography, visual field perimetry, and audiology.
• Comparison of diagnostic criteria for Susac's syndrome and MS.

Main Results:

• Susac's syndrome can be distinguished from MS in most cases with careful history and MR imaging.
• CSF examination, fluorescein angiography, visual field perimetry, and audiology provide crucial diagnostic clues.
• Diagnostic uncertainty may persist in milder cases or forme fruste presentations of Susac's syndrome.

Conclusions:

• Susac's syndrome is now readily distinguishable from multiple sclerosis.
• A combination of clinical evaluation, advanced imaging, and supporting investigations is key for accurate diagnosis.
• Awareness of forme fruste presentations is important for managing diagnostic uncertainty.