Stranger Anxiety: Why Babies Cry With New People and How to Help

What's normal

• Around 6 to 9 months, many babies who once smiled at everyone start to stare, cling, turn away or cry when an unfamiliar person comes close. The CDC lists shyness or fear with strangers as a typical 9-month milestone.
• It often peaks between about 8 and 12 months and can continue into the second year, then fades gradually. Some babies barely show it; others show it strongly.
• It's a sign of healthy development. Your baby now tells familiar from unfamiliar faces and has a clear sense of who their trusted people are.
• It can include relatives and friends the baby doesn't see often, including a grandparent visiting from far away or a parent's partner who is new to the family. It isn't a judgment of that person.
• Temperament matters: cautious, slow-to-warm babies may react more and for longer.

How to help

• Let your baby watch from your arms first. A few minutes of sitting close, while the new person talks to you, lets the baby study them safely.
• Ask visitors to go slow. Say hello to the parent first, smile, keep a little distance, and let the baby make the first move. Offering a toy works better than reaching for the baby.
• Don't force hugs, kisses or being passed around. Taking turns holding can wait until the baby seems at ease.
• Stay warm and relaxed. Babies check your face to decide if someone is safe. A friendly tone with the visitor helps.
• Name it calmly: "That's Auntie. She's a new face. I'm right here."
• Practice in small doses. Short visits, playgroups, library story time and video calls with relatives help faces become familiar.
• Bring comfort items to big gatherings and plan a quiet room or a short walk if it gets to be too much.

Childcare and new caregivers

• Introduce a new sitter, nanny or childcare teacher with you there first, for a few visits if possible.
• Show the caregiver your baby's favorite songs and soothing tricks. A familiar routine eases the handoff (see the caregiver handoff sheet guide).
• Stranger anxiety often appears alongside separation anxiety at drop-off. See the separation anxiety and childcare guide.

For relatives who feel hurt

• Explain that it's a phase of normal development, not about them.
• Grandparents and extended family can help by visiting often, video chatting, using the same songs and games, and letting the baby warm up at their own pace.

Body autonomy starts early

• Respecting a baby's wariness, without pushing them into anyone's arms, is an early step in teaching that their body and feelings matter (see the body safety and consent guide).

When to check in

• Mention it at the next checkup if, by 9 months, your baby doesn't seem to recognize familiar people or show different reactions to them, or doesn't look when you call their name.
• Bring it up if fear of new people is so intense and lasting into the toddler and preschool years that it keeps your child from everyday activities.