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 care for severe or sudden abdominal pain, trouble breathing, collapse, heavy bleeding, or a child who is very unwell or difficult to wake.
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
Arrange a prompt medical assessment if a child has:
A new lump or unexplained swelling in the abdomen
Visible blood in the urine
Persistent abdominal pain or swelling
Unexplained fever, low energy, poor appetite, or weight loss
Repeated headaches or vision changes that could suggest high blood pressure
During chemotherapy, a fever or signs of infection need urgent same-day advice because treatment can reduce the body's ability to fight infection.
Follow the cancer team's instructions about temperature checks and which number to call.
Do not wait for a routine appointment.
3
Does any of this apply?
Book an appointment
Routine follow-up after treatment is still important when a child feels well.
These visits monitor recovery, kidney function, blood pressure, growth, and possible late treatment effects.
Every sign above is quoted from the sofidex article on Wilms tumor. If you are not sure, err upward — it is always reasonable to be checked.