Since birth, your baby has happily moved from arm to arm, letting family and friends cuddle and hold them without protest. Everyone probably commented on how sociable your little one seemed: “What an outgoing baby—he doesn’t miss anyone!”

But just when you got used to that easygoing attitude, something changed. Around eight months old, your little adventurer may suddenly decide that enough is enough and only wants to be in Mom or Dad’s arms (especially Mom’s!). If you disappear from view, your baby may cry inconsolably or cling to your arms and legs so you won’t leave—and so you’ll take them with you.

You might wonder: What’s going on? Why did this change so suddenly?

What your baby is experiencing is called separation anxiety, and it’s a completely normal stage of development. In this article, we explain why separation anxiety happens and share practical tips to help you cope with it.

Why Does Separation Anxiety Happen and How Does It Show?

As mentioned, separation anxiety is a natural part of healthy baby development. This stage typically begins between 7 and 9 months of age and may last until 14–18 months, depending on the child. However, it usually doesn’t disappear completely until around two years old.

Separation anxiety can also reappear later during new experiences that create stress for your child, such as starting preschool at age 3 or 4.

Common Signs of Separation Anxiety

Separation anxiety appears through a series of reactions babies show when they are separated from their parents—especially from their mother, who is often the primary attachment figure. During this stage, you may also notice your little adventurer developing a clear preference for one parent. This is completely normal.

Typical reactions include:

• A new fear of strangers, including relatives and friends they don’t see often

• Clinging to Mom if someone else tries to hold them

• Crying intensely when Mom or Dad leaves their field of vision

  The good news is that these cries usually stop quickly as soon as the parent reappears.

A Positive Sign of Healthy Development

If your baby shows these reactions, there’s no need to worry—they are absolutely normal. In fact, they’re a sign that your baby is developing well.

Family members or friends may sometimes say that the baby is “too attached” or that they cry just to test you. In reality, the opposite is true. Separation anxiety is an important developmental milestone. It shows that your baby has become aware of themselves as an individual, has formed a strong emotional bond with their parents, and that their instinct for safety and survival is working perfectly.

We describe this milestone as “painful” because, according to child psychologist and psychotherapist Margot Sunderland in her book The Science of Parenting, separation anxiety activates the same areas in a baby’s brain as physical pain.

Why Babies Cry When You Leave

During this stage, if your baby cries when they can’t see you or tries to stop you from leaving—even if you’re just going to the next room for a minute—they aren’t trying to manipulate you. They’re simply acting on instinct.

Your baby has realized that their parents are their attachment figures—the people they rely on to feel safe. When you disappear from view, they feel that sense of security vanish as well.

Another important reason is that babies don’t yet understand the concept of time. They can’t tell the difference between the minute it takes to grab something from the kitchen and the eight hours of a workday. To them, both situations can feel like equally distressing separations.

How to Cope With Separation Anxiety

Because separation anxiety is a normal stage of development, parents don’t need to take any special measures beyond patience and understanding.

Of course, we know that constantly needing to be present and visible for your baby can sometimes feel overwhelming—but parenting was never meant to be easy.

Here are four practical tips that can help you navigate this stage.

Acceptance: Babies need a lot of physical contact and closeness, especially during the phase when separation anxiety appears. Try to see this stage in a positive light—your baby is developing exactly as they should. Take the opportunity to enjoy these moments of closeness. In a few months or years, when your child grows more independent, you may even find yourself missing this stage.

Stay calm: This phase can be exhausting and sometimes stressful, but losing patience won’t make it any easier. Stay calm, keep things in perspective (after all, what are a few months in a lifetime?), and focus on giving your baby what they need most: love, trust, and security.

Reduce separations when possible: If your parental leave has ended, you obviously can’t stop going to work. However, whenever it’s within your control, try to limit separations or keep them as short as possible to reduce stress for your little adventurer.

Practice short separations: As your baby grows, they will gradually understand that people separate many times each day—and that it doesn’t mean a permanent goodbye. To help them learn this and ease separation anxiety, try short separations while maintaining contact. For example, if you go into another room to grab something, talk or sing to your baby while you move around the house. This way, your little adventurer will know you’re still nearby—even if they can’t see you.