Mental disorders in Mexican patients with multiple sclerosis

Area of Science:

• Neuroscience
• Psychiatry
• Epidemiology

Background:

• Multiple sclerosis (MS) is a chronic neurological condition.
• Psychiatric comorbidities are common in MS but understudied in specific populations.
• Understanding the prevalence of psychiatric disorders in Mexican MS patients is crucial for targeted care.

Purpose of the Study:

• To investigate the prevalence of psychiatric disorders in Mexican patients diagnosed with multiple sclerosis.
• To identify specific psychiatric conditions, such as depressive and anxiety disorders, within this cohort.
• To explore potential correlations between psychiatric diagnoses and the clinical course of multiple sclerosis.

Main Methods:

• A case-control study involving 37 consecutive Mexican patients with multiple sclerosis and 37 healthy controls.
• Administration of the Structured Clinical Interview for DSM-IV Axis I Disorders (SCID-I).
• Utilized the Montgomery-Asberg Depression Rating Scale (MADRS) and Hamilton Anxiety Rating Scale (HAM-A) for symptom assessment.

Main Results:

• The multiple sclerosis group exhibited significantly higher rates of any Axis I disorder compared to controls (OR 1.97).
• Depressive disorders were the most frequent comorbidity, affecting 46% of MS patients.
• Patients with multiple sclerosis also presented with higher anxiety scores (p=0.001); however, no correlation was found between psychiatric variables and MS relapse rates or clinical course.

Conclusions:

• Psychiatric disorders, especially depression and anxiety, are highly prevalent in Mexican patients with multiple sclerosis.
• These psychiatric comorbidities do not appear to correlate with disease activity or clinical progression in MS.
• Highlights the need for systematic psychiatric screening and management in this patient population.