pseudobulbar affect
Also written as: PBA — pseudobulbar affect
Involuntary, excessive, and inappropriate laughing or crying episodes unrelated to underlying emotional state. Results from damage to brain circuits controlling emotional expression.
Full Definition
Pseudobulbar affect (PBA) is a neurological condition characterized by sudden, involuntary, and often inappropriate episodes of laughing or crying that are disproportionate to or disconnected from the person's underlying emotional state. Also known as emotional incontinence or pathological laughing and crying, PBA results from damage to brain circuits that control emotional expression, particularly connections between the cerebral cortex and brainstem. The condition is commonly seen in patients with multiple sclerosis, amyotrophic lateral sclerosis, traumatic brain injury, stroke, Alzheimer's disease, and Parkinson's disease. Episodes are typically brief but can be distressing and socially disabling for patients. Unlike depression or mania, the emotional displays in PBA do not reflect the patient's actual feelings. FDA-approved treatments include dextromethorphan/quinidine combinations specifically for PBA management.
Usage
Usage note: Hyphenate when used as compound modifier. PBA acronym widely accepted in clinical documentation.
In Context
- "The patient's pseudobulbar affect significantly improved following initiation of dextromethorphan/quinidine therapy." — Neurology follow-up note
- "Family education addressed the distinction between pseudobulbar affect and underlying mood disorders." — Patient counseling documentation