What is the Period of PURPLE Crying?

Written by Yuppo Lab Experts.

Updated 27 October 2026

The Period of PURPLE Crying is a name for the normal phase in the first months of life when babies cry more, often peaking around 2 months and easing by 3 to 5 months. It was developed by the National Center on Shaken Baby Syndrome to help parents understand and cope with crying.

What does PURPLE stand for?

Each letter describes a feature of this normal crying:

  • Peak of crying, around 2 months
  • Unexpected: crying comes and goes without reason
  • Resists soothing
  • Pain-like face, even when not in pain
  • Long lasting: crying can go on for hours
  • Evening: crying is often worse in the late afternoon and evening

What you can do

  • Try soothing: holding, rocking, walking, white noise or a warm bath.
  • If crying overwhelms you, put your baby down safely on their back in their cot, leave the room and take a few minutes to calm down.
  • Never shake a baby.

When to talk to your doctor

See your doctor if your baby's crying seems different from usual, if they have a fever, are feeding poorly or seem unwell.

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