September 18, 2026
When a baby stops using a familiar skill
If a baby seems to lose a familiar skill, note what changed and contact a clinician promptly. A parent note cannot explain the cause.
A previously used skill that seems absent is worth discussing promptly with a clinician. CDC specifically advises parents to act early if a child loses a skill once used. One moment, tiredness, or a different setting may complicate what you see, so describe examples rather than deciding the cause yourself. Do not wait for a routine visit if the change concerns you. CDC act-early guidance AAP on lost skills
Make the change clear to the care team
- Write what the baby used to do, with a recent concrete example.
- Note what you now see, when it started, and whether it happens in different settings.
- Include illness, injury, or other relevant context without claiming it caused the change.
- Contact a clinician and ask how soon the child should be assessed.
| Previously | What action did you observe and when? |
|---|---|
| Now | What is different, and how often have you noticed it? |
| Next | Ask whether examination, screening, or referral is appropriate. |
CDC milestone checklists support a conversation, not a diagnosis or a substitute for validated screening. In Indonesia, bring the child's Buku KIA and describe the same before-and-now examples to the local care team. A clinician can decide what evaluation fits the child. CDC checklist limits Kemenkes Buku KIA
Read the monitoring-versus-screening guide for what those terms mean and the visit-note guide for a concise record. An Emomo entry can preserve the timeline. Tracking is not diagnosis; an individual loss of skill belongs with a qualified clinician. monitoring and screening development visit notes
Sources
Every figure in this guide traces to one of these sources.
- CDC — Developmental Milestones (2026)
- AAP — What to Expect During a Neurology Appointment
- Kemenkes — Buku KIA 2024
General information, not medical advice. Talk to your pediatrician about your own child.
- Category
- Parenting · Child development
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- Baby milestone & activity companion
- Compatibility
- iPhone (iOS) and Android
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- Free to start, for little ones 0–24 months
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