sleep regression
Baby's worsened nights
Sleep regression is a period when a baby or toddler who previously slept well suddenly has difficulty falling asleep, staying asleep, or both.
These disruptions typically occur at predictable ages—around four months, eight months, and eighteen months—often coinciding with developmental leaps.
Parents use the term to describe phases that feel like backsliding: We were finally getting rest, then the four-month sleep regression hit.
- growth spurtPeriod of accelerated physical development
- teethingFirst molars emerging
- object permanenceKnowledge things persist unseen
- separation anxietyDistress from being apart
- circadian rhythmBuilt-in sleep-wake cycle
crawling · clinginess · walking · melatonin · swaddling · white noise machine · cortisol levels · dream feed · language acquisition · restlessness · witching hour · room temperature · noise levels · blackout curtains · brain waves · seasonal changes · nursing
- baby sleepcrib, bassinet, swaddle, swaddling, nap
- infant developmentbabbling, developmental milestones, crawling, first steps, developmental delay
- Developmental Disordersautism spectrum, Down syndrome, intellectual disability, learning disability, learning disorder
- postpartumafterpains, involution, uterine contractions, lactation, milk production
- nursing problemslow milk supply, engorgement, mastitis, sore nipples, cracked nipples
sleep, regression, sleeper, sleepers, sleeping, sleepy, sleepless, sleeplessness, sleepily