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Table 3 Language used by caregivers to describe initial signs and symptoms of MLD

From: Understanding caregiver descriptions of initial signs and symptoms to improve diagnosis of metachromatic leukodystrophy

SECTION I: Language used by caregivers to describe initial signs and symptoms of MLD

Symptom category

Language used by caregivers

Coordination difficulties

Abnormal gait

Broad-based gait

Delayed walking, difficult walking, strange posture

Delayed when walking, many falls, gait sluggish

Early to crawl, but late to stand up and hold onto things

Has never been able to walk freely, twisted foot while walking

Loss of balance, tripping

Never walked, left was weaker than her right side

Not progressing with walking (started taking first steps but did not progress after)

Pain when walking, motor problems indicated by the teacher

Problems with motor development

Slow motor skills

Stagnation of motor development

Started to lose balance

Struggled to run- uncoordinated, clumsy, started walking late as a baby

Trouble walking

Unstable sitting, walking

Unstable walking, never able to ride a bike

Unsteady gait

Wasn’t getting on the couch anymore

Wasn’t walking

Clonus/tremor

Arm movement as if after a Stroke

Clonus

Developed a small tremor in Hands

Hand tremors

Shake really bad after naps, Foot tremoring

slight tremor

slight tremor, eye lid twitching (that pediatrician noticed on regular checkup)

tremors

very mid absences

Comprehension challenges

Ability to do math, top of his class in 1st grade, 2nd grade couldn't monitor progress and didn't know he was struggling, 3rd grade couldn't add

Appearing sleepy and dazed

Cognitive delays

Difficulty learning (learning vocabulary)

Forgetful- getting lost

Gaps between achieving milestones was getting bigger

Lack of concentration, issues with concentration levels

Only 6 words

Regression in writing

Changes in personality/behavior

Behavioral disorders

Much crying

Obstinate

Peeing pants in school

Personality changes, impulsive behavior, issues with sleep, loss of interest in activities that […] used to be interested in

Severe fatigue, nocturnal awakenings

Vision issues

Strabismus, nystagmus

Sudden squint

Went cross-eyed overnight

SECTION II: Language used by caregivers to describe specific developmental issues of MLD

Developmental issues

Language used by caregivers

Developmental delays

Reaching milestones slowed

Delayed walking

Developmental delays, small, cognitive delays

Early to crawl, but late to stand up and hold onto things, gaps between milestones was getting bigger

Late walker

Difficulty learning (learning vocabulary)

Slower than average child, wasn’t walking

Started walking late as a baby

Developmental stagnation

Milestones never met

Could never walk freely

Could never walk independently

Development not progressing

Motor development stagnation

Never able to ride a bike

Never walked

Not progressing with walking (started taking first steps but did not progress after)

Stagnation of motor development

Developmental regression

Losing milestones that were previously reached

Ability to do math, top of his class in 1st grade, 2nd grade couldn't monitor progress and didn't know he was struggling, 3rd grade couldn't add

Appearing sleepy and dazed, loss of interest in activities that he used to be interested in

Issues with concentration levels, little bit of regression (not age-appropriate behavior)

Forgetful- getting lost, peeing in pants at school

Loss of balance

Only 6 words, regressing

Regression in writing

Trouble walking (later on)

Unsteady gait, sudden squint

Wasn’t getting on the couch anymore

Went cross-eyed overnight and started to lose her balance