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Speech impairment is a common but often misunderstood symptom of Functional Neurological Disorder (FND). It can include mutism, stuttering, slurred or slowed speech, difficulty finding words, or voice changes. These symptoms are real, involuntary, and not a reflection of cognitive ability or intoxication.
Common Presentations:
Functional Mutism: Inability to speak, sometimes intermittent
Stuttering or Word Blocks: Disrupted speech flow
Slurred or Slow Speech: Difficulty with articulation or pacing
Voice Changes: Whispery, strained, or absent voice
Word-Finding Difficulty: Trouble retrieving words or names
Associated Features:
Brain fog or cognitive fatigue
Facial dystonia or jaw tightness
Dissociation, emotional stress
Co-existing aphonia, tremors, or facial weakness
1. Speech and Language Therapy (SLT)
Tailored to functional causes
Focus on:
Breath control and vocal cord relaxation
Gradual reintroduction of speech (sound > syllable > word)
Augmentative communication support
Cognitive communication therapy (for brain fog overlap)
2. Communication Aids
Use alternative methods when speech is difficult:
Text-to-speech apps (e.g., Proloquo, TD Talk)
Whiteboards or notebooks
Prewritten flashcards for common needs
Pointing charts or picture boards
Keep aids accessible at all times
3. Pacing and Speech Rest
Avoid forcing speech during flares
Use quiet cues or gestures to conserve energy
Schedule rest breaks throughout the day
4. Mental Health and Trauma Support
Speech issues may be worsened by stress, trauma, or dissociation
Trauma-informed CBT or ACT
EMDR if trauma is a root cause
Address anxiety around speaking or social fear
5. Education and Validation
Speech symptoms are real and reversible with time/support
Educate family and professionals to avoid misinterpretation
Reaffirm that difficulty speaking does not mean:
Intoxication
Intellectual disability
Lack of understanding
Communicate in advance that speech may become impaired
Use prewritten cards ("I'm currently unable to speak")
Provide a quiet environment and avoid rushing responses
Reintroduce speech gradually after rest (humming, vowels, etc.)
Avoid frustration or pressure to “snap out of it”
Sudden onset with other stroke-like symptoms
Loss of swallowing function or risk of choking
Inability to communicate basic needs with no backup method
Ask if the person can communicate nonverbally
Offer paper, phone, or signal-based systems
Speak slowly and clearly, one idea at a time
Avoid interrupting or correcting stuttering
Be patient—wait time is critical
Speech and Language Therapist (SLT): Core support
Neurologist: Confirm diagnosis, rule out stroke or structural causes
Psychologist: Address stress, trauma, and performance anxiety
Occupational Therapist: Assistive communication tools
Primary Care Provider: Coordinate care and monitor comorbidities
FND-related speech impairment is a reversible, functional condition that responds well to support, pacing, and communication tools. Patience and validation make a profound difference.