Methylphenidate-induced obsessive-compulsive symptoms in an elderly man

Area of Science:

• Neuroscience
• Psychiatry
• Pharmacology

Background:

• Investigating the neuropsychiatric effects of stimulant medication in elderly patients with comorbid conditions.
• Examining the potential for drug-induced behavioral changes in individuals with early Alzheimer's disease and treatment-resistant depression.

Observation:

• An 82-year-old male patient with treatment-resistant depression and early Alzheimer's disease was initiated on methylphenidate.
• The patient developed significant obsessive-compulsive behaviors following methylphenidate initiation.

Findings:

• Obsessive-compulsive symptoms markedly improved upon discontinuation of methylphenidate and initiation of fluvoxamine.
• The patient had no prior history of psychiatric conditions, though a family history of obsessive-compulsive disorder was noted.

Implications:

• Methylphenidate may precipitate obsessive-compulsive behaviors in vulnerable elderly patients, particularly those with underlying cognitive or mood disorders.
• This case highlights the importance of careful monitoring for emergent psychiatric symptoms during stimulant therapy in geriatric populations.
• Fluvoxamine may be an effective treatment for methylphenidate-induced obsessive-compulsive behaviors.