PHENOTYPE · MOVEMENT / GAIT / TICS
Similar-looking movements can arise from different neurologic, orthopedic, pain, sensory, medication, seizure, sleep, or state processes. This chapter asks independently when a finding began, whether it is constant or episodic, and whether capacity or access has changed.
OBSERVE
BRING
SAFETY
WORKSHEETS FOR THIS CONCERN
Start with the highlighted worksheet. Add the companion tool when it fits the visit or change you are tracking.
Motor delay, tone differences, gait or coordination concerns, and other movement-related findings occur within the heterogeneous published human phenotype; publication denominators and definitions are not uniform.
The current evidence cannot establish the prevalence or mechanism of hypotonia, tics, gait change, pain, fatigue, laterality, visual-motor difference, or acquired motor loss.
Mouse muscle and myoblast experiments show a direct ASH1L role in myoblast fusion and regeneration in that lineage. They do not establish human myopathy or explain an individual gait or movement phenotype.
Describe the exact movement or lost function, compare it with the prior baseline, and pair video or examination with pain, sleep, medication, neurologic, sensory, and recovery context.
See how evidence is reviewed →TWO MOVEMENT CLASSIFICATION QUESTIONS
Long-standing versus newly acquired is independent of constant versus episodic. Neither classification by itself establishes whether motor capacity changed or an established ability became less reliably accessible.
Is the finding long-standing, or is it newly acquired?
Compare with the person’s documented baseline. A long-standing developmental pattern and a new loss or alteration call for different clinical questions.
Is it constant, episodic, or fluctuating?
A newly acquired change may be constant or episodic, and a long-standing pattern may also fluctuate. Record timing independently from when the finding first appeared.
MEASUREMENT DOMAINS
Neurologic examination, antigravity movement, functional strength, fatigability, asymmetry, and change from baseline.
Walking conditions, balance, transfers, endurance, assistive devices, orthopedic alignment, pain, and environment.
Reach, fine motor control, sequencing, cerebellar signs, vision, practice effects, and task demands.
Video when safe, awareness, suppressibility, urge, distribution, rhythm, context, duration, and recovery; clinician classification remains essential.
Location, range of motion, instability, injury, skin or joint features, sleep, medication, and participation impact.
Same functional measure, therapy dose and target, spontaneous recovery, co-interventions, plateau, recurrence, and latest follow-up.
MOVEMENT EVIDENCE TO ADD TO THE TIMELINE
Repeat the same functional measure whenever clinically appropriate.
FINDINGS THAT NARROW THE QUESTION
Media can preserve timing and visible movement. It cannot determine electrical, psychiatric, orthopedic, pain, or movement-disorder mechanism by itself.
A captured event without an epileptiform correlate informs that event. It does not classify every movement or exclude a separate seizure disorder.
It narrows the structural question sampled by that method and time; it does not establish normal motor network function.
Improvement with rehabilitation supports recoverable function, but does not identify the original mechanism.
MODEL-SYSTEM EVIDENCE
A 2018 cell-model study connects ASH1L to myogenic differentiation and fusion. It does not establish a human muscle disorder or explain an individual person’s gait or tics.
Open the primary study ↗