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 baby:
Has severe trouble breathing, turns blue or grey, or stops breathing
Is unresponsive, unusually floppy, or has a seizure
Has had a serious injury or may have been shaken
Is choking and cannot breathe or cry
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 medical care the same day if your baby:
Is under 3 months old with a temperature of 38°C or higher
Has green vomit, blood in vomit or stool, or a swollen abdomen
Is very sleepy, weak, difficult to wake, or refusing feeds
Has far fewer wet diapers or other signs of dehydration
Has a new rash that does not fade when pressed
Has a bulging soft spot, unusual high-pitched cry, or obvious severe pain
Cries continuously and cannot be comforted, especially if this is new
3
Does any of this apply?
Book an appointment
Arrange a routine appointment if crying repeatedly affects feeding or sleep, your baby is not gaining weight, vomiting is frequent, or the pattern is becoming harder to manage.
Book an appointment whenever you remain concerned, even without a specific warning sign.
Every sign above is quoted from the sofidex article on Excessive crying in infants. If you are not sure, err upward — it is always reasonable to be checked.