Developmental Red Flags by Age — When to Talk to Your Doctor

What Are Developmental Red Flags?

Developmental red flags are signs that a child may not be developing as expected for their age. They do not automatically mean something is wrong — many children who show one or two red flags develop perfectly normally. However, recognizing these signs early allows you to seek evaluation and, if needed, access intervention during the critical early years when the brain is most adaptable.

The key principle: it is always better to raise a concern and be reassured than to "wait and see" when something feels off.

Red Flags by Age

Birth to 3 Months

Seek evaluation if your baby:

• Does not respond to loud sounds

• Does not watch things as they move

• Does not smile at people by 2 months

• Does not bring hands to mouth

• Cannot hold head up when pushing up on tummy

• Seems very stiff or very floppy

4 to 6 Months

Seek evaluation if your baby:

• Does not reach for objects

• Does not respond to sounds around them

• Does not laugh or make squealing sounds

• Does not roll in either direction

• Seems very stiff or very floppy in the limbs

• Shows no affection for caregivers

• Has difficulty getting objects to mouth

7 to 9 Months

Seek evaluation if your baby:

• Does not bear weight on legs when held standing

• Does not sit with help

• Does not babble (no consonant sounds like "ba," "da")

• Does not play interactive games (peek-a-boo)

• Does not respond to own name

• Does not recognize familiar people

• Does not look where you point

10 to 12 Months

Seek evaluation if your baby:

• Does not crawl or show interest in moving

• Cannot stand when supported

• Does not search for things they see you hide

• Does not say single words like "mama" or "dada"

• Does not use gestures like waving or shaking head

• Loses skills they once had

12 to 18 Months

Seek evaluation if your child:

• Does not point to things

• Does not walk by 18 months

• Does not know what familiar objects are for (phone, brush, spoon)

• Does not copy others

• Does not gain new words

• Does not have at least 6 words by 18 months

• Does not notice when a caregiver leaves or returns

18 to 24 Months

Seek evaluation if your child:

• Does not use at least 15 words

• Does not combine two words by 24 months ("more milk," "go car")

• Does not follow simple instructions

• Does not copy actions or words

• Does not walk steadily

• Does not know the function of common items

• Loses previously acquired skills

2 to 3 Years

Seek evaluation if your child:

• Falls down frequently or has difficulty with stairs

• Drools or has very unclear speech

• Cannot work simple puzzles or toys (knobs, levers, handles)

• Does not speak in sentences

• Does not understand simple instructions

• Does not engage in pretend play

• Does not want to play with other children

• Does not make eye contact

3 to 4 Years

Seek evaluation if your child:

• Cannot jump in place

• Has difficulty scribbling

• Shows no interest in interactive games or make-believe

• Ignores other children

• Does not respond to people outside the family

• Cannot retell a favorite story

• Does not follow 3-part instructions

• Does not use "me" and "you" correctly

4 to 5 Years

Seek evaluation if your child:

• Cannot hop on one foot

• Has difficulty with cutting, drawing, or using small objects

• Does not use sentences of more than 4 words

• Does not engage in a variety of activities

• Does not talk about daily activities

• Cannot tell what is real and what is make-believe

• Is withdrawn or extremely aggressive with peers

• Is unable to separate from parents without extreme distress

The Most Critical Red Flag at Any Age

Loss of previously acquired skills. If your child could do something (saying words, waving, making eye contact, walking) and then stops doing it, seek evaluation immediately regardless of age. Regression can indicate several conditions that benefit from early intervention.

What to Do When You Notice Red Flags

Step 1: Document

Write down specific observations with dates and contexts. Note what you see (or do not see) and how it compares to other children the same age. Tracking apps like Nurtoora can make this process systematic.

Step 2: Talk to Your Pediatrician

Bring your observations to your next well-child visit — or schedule a specific appointment if you are concerned. Be specific: "She has 3 words at 18 months" is more actionable than "I think she's behind."

Step 3: Request Screening

Ask for a formal developmental screening if you are concerned. The ASQ (Ages and Stages Questionnaire) and PEDS (Parents' Evaluation of Developmental Status) are common tools.

Step 4: Seek Early Intervention

In the US, early intervention services are free for children under 3 (Part C of IDEA). You can self-refer without a doctor's order. Contact your state's early intervention program directly.

For children 3–5, your local school district provides free developmental evaluation and services through the public preschool system (Part B of IDEA).

Step 5: Trust Your Instincts

You know your child best. If something does not feel right, pursue evaluation even if others say "they'll grow out of it." Research confirms that parent concerns are one of the most reliable indicators of actual developmental differences.

How Nurtoora Supports Early Identification

Nurtoora tracks development across 7 domains with age-specific milestones. The app's AI-powered insights can highlight patterns you might not notice in daily life, and the PDF reports give you a clear, professional summary to share with healthcare providers. Daily tracking builds the detailed picture that helps professionals make faster, more accurate assessments.