Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
1
Is any of this happening now?
Call 911
Call emergency services now if your child:
Is struggling to breathe, turns blue or grey, or has pauses in breathing
Is unresponsive, extremely difficult to wake, or having a seizure
Has a serious head injury or may have swallowed poison
Has severe swelling of the face or tongue
May be in immediate danger from abuse or injury
Other emergency signs, for anyone
Someone who is struggling to breathe, gasping, choking, or cannot get words out
Someone who has chest pain, tightness or pressure lasting more than a few minutes
Someone who has sudden weakness or drooping on one side of the face or body, slurred speech, or sudden confusion
Someone who is unconscious, or cannot be woken
Someone who is bleeding heavily and it will not stop with firm pressure
Someone who has had a seizure that will not stop, or does not wake up afterwards
Someone who has lips or skin that look pale, blue, grey or blotchy
Someone who you believe has taken an overdose or swallowed something poisonous
2
Is any of this happening?
Be seen today
Seek urgent, same-day medical care if:
A baby under 3 months has a temperature of 38°C or higher
Crying is continuous, severe, or cannot be soothed
The cry sounds unusually weak, high-pitched, or unlike your child's normal cry
Your child has a stiff neck, a rash that does not fade under pressure, or marked drowsiness
There is green vomit, blood in vomit or stool, severe belly swelling, or intense belly pain
Your child is feeding poorly or has noticeably fewer wet nappies
There is painful swelling in the groin or scrotum
3
Does any of this apply?
Book an appointment
Arrange a routine appointment if crying keeps returning, disrupts feeding or sleep, or is affecting family life.
Older children may need support if crying is linked to persistent sadness, anxiety, school avoidance, bullying, or loss of interest in usual activities.
Every sign above is quoted from the sofidex article on Crying in childhood. If you are not sure, err upward — it is always reasonable to be checked.