Obsessive-compulsive disorder associated with parietal white matter multiple sclerosis plaques

Area of Science:

• Neuroscience
• Neurology
• Psychiatry

Background:

• Multiple sclerosis (MS) is a demyelinating disease affecting the central nervous system.
• Obsessive-compulsive disorder (OCD) is a neuropsychiatric condition characterized by obsessions and compulsions.
• The relationship between MS and OCD, particularly involving specific brain regions, requires further investigation.

Observation:

• A patient diagnosed with multiple sclerosis developed new-onset obsessive-compulsive symptoms.
• These symptoms worsened concurrently with the appearance of a new multiple sclerosis plaque in the right parietal white matter.
• This observation suggests a potential link between parietal white matter pathology and OCD symptom severity.

Findings:

• Parietal white matter abnormalities may contribute to the development or exacerbation of obsessive-compulsive symptoms in MS.
• Disruptions in white matter microstructure could affect functional connectivity in brain networks crucial for OCD pathophysiology.
• This case implicates the parietal lobe's white matter in mediating obsessions and compulsions.

Implications:

• Further research into parietal white matter's role in OCD pathophysiology is warranted.
• Understanding these mechanisms could lead to novel therapeutic targets for OCD in MS patients.
• This case broadens the understanding of how white matter lesions in MS can manifest with diverse neuropsychiatric symptoms.