Attention deficit hyperactivity disorder erroneously diagnosed and treated as bipolar disorder

Area of Science:

• Psychiatry
• Neurology
• Clinical Psychology

Background:

• Limited literature exists on misdiagnosis of bipolar disorder.
• Differential diagnosis for bipolar disorder can be challenging, especially with comorbid conditions.

Observation:

• A case report details an adult with attention deficit hyperactivity disorder (ADHD) misdiagnosed with bipolar disorder for six years.
• The patient received methylphenidate, a stimulant medication, which led to significant clinical improvement.

Findings:

• Methylphenidate treatment resulted in notable improvements, as measured by the Clinical Global Impressions Severity Scale.
• These positive treatment outcomes were sustained at a 6-month follow-up, suggesting the initial misdiagnosis.

Implications:

• This case underscores the critical importance of thorough differential diagnosis in identifying bipolar disorder.
• Accurate ADHD diagnosis and treatment can prevent prolonged, ineffective interventions for bipolar disorder.