When your baby cries in their sleep, it can be confusing and even a little scary for parents. The good news is that in many cases, baby crying in sleep is normal and tied to development, sleep cycles, or temporary discomfort. In this guide, we’ll explain why babies cry in their sleep and how to tell when your baby truly needs help.
Why Do Babies Cry In Their Sleep?
Hunger
The most obvious reason a baby cries in their sleep is hunger. Some babies don’t fully wake when they need to eat. They may appear half asleep but will feed eagerly.
When babies wake from hunger, they will usually go right back to sleep after feeding, even if they are placed back in their crib awake but drowsy.
Sleep Cycle Transitions
After about 4 months old, baby sleep cycles change, and babies transition between sleep cycles more independently.
The first few hours of the night are usually the deepest sleep. After that, babies cycle between deep and lighter sleep throughout the night. During these transitions, babies may briefly fuss or cry. The fussing is often 5 minutes or less, though sometimes up to 10 minutes.
This is similar to adults talking or moving in their sleep. If your baby quickly returns to sleep, this is typically nothing to worry about. Here’s more on Sleep Cycles by Age
If this happens more than a few times per night, it may be worth reviewing your baby’s sleep schedule.
Teething or Illness Discomfort
If your baby is uncomfortable, from teething, illness, or fever, they may cry or fuss while sleeping.
If teething is the cause, comfort strategies from our Teething and Sleep article will help, and your baby has a fever or seems sick, give your healthcare provider a call.
In most cases, temporary sleep disruptions from discomfort will improve within a few days. If crying during sleep continues longer than expected, another cause may be involved.
Overtiredness (Needs More Sleep)
If your baby wakes crying, they may actually need more sleep, not less.
Babies who wake crying for the day or after short naps often have not completed a full sleep cycle. In these cases, they may have been taken out of sleep too early.
If this happens frequently, consider whether your baby is overtired.
Sleep Associations (Very Common)
One of the most common reasons babies cry in their sleep is sleep associations… especially if they cannot fall back to sleep without help.
Examples include needing:
• Pacifier replaced
• Rocking or bouncing
• Feeding to return to sleep
• Being held
Not all sleep associations are bad, but if night wakings are frequent, adjusting sleep habits or using sleep training strategies may help improve sleep for everyone. Read all about sleep associations in our article on Baby Sleep Associations
How Should You Handle Baby Crying In Their Sleep?
If your baby does not seem to need anything and only cries briefly, it is often best to pause and wait. Many babies will settle back to sleep on their own.
If crying continues or your baby clearly needs something, respond as needed. For example:
• Feed if hungry
• Change diaper if soiled
• Comfort if sick or teething
If sleep associations are causing frequent night wakings, creating a plan to gradually reduce sleep assistance may help improve sleep quality for both baby and parents.
If your baby is eating frequently overnight beyond the age when night feeds are typically needed, it may be time to consider night weaning (if appropriate for your baby and with pediatric guidance).
Can Babies Have Bad Dreams?
Many experts believe babies may begin experiencing nightmares sometime around the first year of life, and possibly earlier. Since nightmares happen during REM (active) sleep, it is possible that babies, even newborns, experience dream-like brain activity. How complex those dreams are is still unknown. For more on nightmares, check out: Baby & Toddler Night Terrors and Nightmares
Baby Crying in Sleep FAQs
Yes, baby crying in sleep is often normal and commonly happens during sleep cycle transitions, brief arousals, or developmental changes. If your baby settles back to sleep within a few minutes and otherwise seems healthy, it is usually not a cause for concern.
You should talk to your pediatrician if your baby’s crying is paired with fever, signs of illness, ongoing pain symptoms, breathing issues, or sudden changes in sleep patterns. Frequent or worsening night crying can sometimes signal a schedule issue, illness, or discomfort.
In most cases, you do not need to wake your baby if they are crying in sleep. Many babies fuss or cry briefly between sleep cycles and return to sleep on their own. If crying continues longer than a few minutes or sounds distressed, it’s reasonable to check on your baby.
Understanding Your Baby’s Nighttime Cries
Most cases of baby crying in sleep are linked to normal development, sleep cycles, or temporary discomfort. If your baby is growing well, seems comfortable during the day, and settles back to sleep quickly, brief crying during sleep is usually nothing to worry about. When in doubt, always trust your instincts and talk with your pediatrician!
