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
Seek emergency help for heavy or continuous rectal bleeding, fainting, confusion, severe weakness, breathing difficulty, or a painful prolapse that becomes dark or cannot be returned inside.
These signs can indicate major blood loss, severe dehydration, or injury to prolapsed tissue.
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 for:
A red or pink mass protruding from the anus
Repeated bloody diarrhea
Severe or worsening abdominal pain
Inability to keep fluids down
Signs of dehydration, such as very little urine or marked drowsiness
And for anyone, someone who:
has a fever with a stiff neck, a rash that does not fade under pressure, or severe headache
has a wound that is hot, spreading red, or leaking pus
3
Does any of this apply?
Book an appointment
Make a routine appointment if you have persistent diarrhea, recurring abdominal pain, blood or mucus in your stool, unexplained anemia, or weight loss.
Mention travel or residence in a region where soil-transmitted worms are common, even if it was months or years ago.
The article also says
A child should be assessed if ongoing bowel symptoms occur with poor weight gain, reduced growth, unusual tiredness, or pale skin.
Every sign above is quoted from the sofidex article on Whipworm infection. If you are not sure, err upward — it is always reasonable to be checked.