Symptoms · Symptom Library · FND presentation

Functional movement disorders

When movement programmes fire the wrong way

Also called: functional movement disorder · FMD

Functional movement disorders cover involuntary movement symptoms — tremor, dystonia-type postures, jerks, gait changes and more — driven by functional nervous-system patterns rather than the classic degenerative movement-disease pathways.

Safety. Urgent review for sudden severe change, injury risk you cannot manage, or stroke-like features. Use the specific symptom pages for pattern-level safety notes.

How it can feel

  • Movements you cannot suppress.
  • Postures that lock or twist without permission.
  • Walking that becomes unreliable.
  • A body that “over-reacts” under fatigue or sensory load.

Day to day

  • Planning journeys, work tasks and social plans around unpredictable movement.
  • Explaining symptoms that look dramatic but are not acted.
  • Balancing activity with recovery so symptoms do not spike.

Why this can be FND (simply)

“Functional” here means a problem of function and coordination in motor networks — not a moral judgement. Symptoms are genuine. This overview links to more specific pages for each pattern.

What can help

  • Specialist assessment and a shared language for what is happening.
  • Physiotherapy / OT designed for functional movement symptoms.
  • Education that reduces fear-driven bracing and boom-bust cycles.
  • Treating companions such as pain, sleep loss and overload.

This is information, not a treatment plan. Personal care decisions belong with you and your clinicians.

FAQs

Is this one diagnosis or many?

Clinicians may use an umbrella term and then name the main pattern (tremor, dystonia, gait, and so on). What matters is an accurate explanation and a plan.

Next steps