Stutter disorder

MONDO:0000723

A speech disorder characterized by frequent sound or syllable repetitions, sound prolongations, or other dysfluencies that are inappropriate for the individual's age.

Also known as: stutter, familial persistent stuttering, stuttering, familial persistent

29 clinical trials for this condition and its sub-types, 22 tagged with Stutter disorder itself.

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Where it sits in the disease tree

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Part of

↑ Hereditary neurological disease (5772) ↑ Language disorder (179) ↑ Speech disorder (82)

Sub-types of Stutter disorder

Stuttering, familial persistent, 1 0 trials
Stuttering, familial persistent, 2 0 trials
Stuttering, familial persistent, 3 0 trials
Stuttering, familial persistent, 4 0 trials

Including sub-types (29) Tagged with Stutter disorder (22)

Trials to join now! 13 Not yet recruiting 1 Not yet finished but already full! 1 Completed 7

Magic mushroom compound could help people who stutter

Symptom relief Not yet recruiting

This Phase 2 pilot study will test whether a single high dose of psilocybin (the active ingredient in magic mushrooms) combined with speech therapy can improve fluency and reduce struggle in 25 adults who stutter. Researchers will measure changes in stuttering severity and brain …

Phase 2 • Sponsor: NYU Langone Health • Aim: Symptom relief

Last updated Jun 27, 2026 08:06 UTC

Stutter disorder

Where it sits in the disease tree

Magic mushroom compound could help people who stutter