Velopharyngeal Discordination: Evaluation and Management
For velopharyngeal discordination (a functional disorder distinct from structural velopharyngeal insufficiency), speech therapy using symptomatic behavioral techniques is the definitive treatment, as this represents a learned motor control problem rather than an anatomical defect.
Critical Distinction: Functional vs. Structural
The term "velopharyngeal discordination" specifically refers to a functional/behavioral disorder where the velopharyngeal mechanism is anatomically intact but not functioning properly due to motor control issues or learned maladaptive patterns. This must be differentiated from:
- Velopharyngeal insufficiency (VPI): Structural/anatomical inadequacy requiring surgery
- Velopharyngeal mislearning: Functional articulation errors amenable to speech therapy
Evaluation Approach
Essential Components
Perceptual speech evaluation by a specialized speech-language pathologist (SLP) is the cornerstone of assessment 1. This should include:
- Spontaneous speech samples
- Standardized phrase repetition tasks
- Assessment of resonance quality, nasal emissions, and pressure consonant production
- Evaluation during correctly articulated pressure consonants (critical for distinguishing functional from structural causes) 1
Diagnostic Imaging (When Indicated)
If structural VPI cannot be ruled out clinically:
- Nasoendoscopy is most commonly used to visualize velopharyngeal closure patterns 2, 3
- Videofluoroscopy, MRI, or nasometry may supplement evaluation 3, 5
Key caveat: Defer surgical planning until VPI can be confirmed from correctly articulated pressure consonants 1. If speech errors are due to mislearning or discordination, imaging findings may be misleading.
Management Algorithm
For Confirmed Functional Velopharyngeal Discordination
Speech therapy is the primary and definitive treatment 6. The guideline-recommended approach includes:
Symptomatic Behavioral Techniques 6
Natural reflexive behaviors with sound:
- Coughing, throat clearing with voice present
- Yawning followed by sighing
- Grunting, groaning, comfort moaning sounds
- Gargling with firm sound (with and without water)
- Phonation on inhalation with relaxed body
Playful pre-linguistic vocal sounds:
- Blowing raspberries while voicing
- Phonating with rising/falling scales
- Tongue trills with voiced consonants
- Low-pitched glottal fry at bottom of vocal range
Physical and postural maneuvers:
- Laryngeal repositioning with concurrent vocalization
- Circumlaryngeal massage during phonation (with patient consent)
- Phonating while bending over or looking at ceiling
- Large body movements (jumping, shaking) with vocalization
Attentional redirection:
- Bubble blowing into water with vocalization
- Walking and talking in varied acoustic environments
- Use of amplification or altered auditory feedback
- Biofeedback using electroglottography or electromyography
Psychological Components 6
- Communication counseling addressing predisposing, precipitating, and perpetuating factors
- Identify and address avoidance patterns or excessive dependence on communication aids
- Address social or situational anxiety related to speaking
- Consider collaborative work with mental health professionals for cognitive-behavioral therapy if long-standing anxiety, depression, or medicolegal issues present
Common Pitfalls to Avoid
Misdiagnosing functional discordination as structural VPI: This leads to unnecessary surgery that cannot address the underlying motor control problem 1
Attempting speech therapy for true structural VPI: Speech therapy cannot improve hypernasality, nasal emissions, or weak pressure consonants caused by anatomical inadequacy 3
Premature surgical decision-making: Surgery should only be considered after confirming VPI during correctly articulated pressure consonants 1
Inconsistent evaluation protocols: Teams vary widely in their approaches 2, making it essential to follow standardized perceptual assessment protocols
Treatment Outcomes
Speech therapy is highly effective for functional velopharyngeal discordination when the anatomical mechanism is intact 6. The behavioral techniques help patients regain voluntary control over the velopharyngeal mechanism by redirecting attention, using reflexive behaviors, and addressing psychological perpetuating factors.
Outcomes are more favorable when intervention occurs early and when there are no comorbid long-standing anxiety, depression, or ongoing medicolegal issues 6.