[The laboratory diagnosis of multiple sclerosis]

Area of Science:

• Neurology
• Diagnostic Medicine

Context:

• The diagnosis of multiple sclerosis (MS) often involves complex laboratory investigations.
• Several neurological disorders can mimic MS symptoms, leading to extensive testing.
• Clinicians may overemphasize laboratory methods for early MS diagnosis.

Purpose:

• To review the role of various laboratory methods in diagnosing multiple sclerosis (MS).
• To discuss differential diagnoses that can mimic MS.
• To emphasize the primary role of clinical observation in MS diagnosis.

Summary:

• This review examines the utility of MRI, evoked potentials, and cerebrospinal fluid analysis in MS diagnosis.
• It highlights conditions like cerebrovascular diseases, vasculitis, and neurosarcoidosis that can mimic MS.
• The review concludes that clinical history and neurological examination are paramount for accurate MS diagnosis.

Impact:

• Reduces unnecessary and costly laboratory investigations for suspected MS.
• Improves diagnostic accuracy by prioritizing clinical assessment.
• Provides a clear guideline for clinicians on MS diagnostic approaches.