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 urgent or emergency help for:
New weakness, numbness, or loss of bladder or bowel control
Severe breathing difficulty, blue or grey lips, or new severe chest pain
Sudden intense bone pain, deformity, or inability to use a limb
Heavy bleeding, collapse, confusion, or difficulty waking
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
Contact the oncology service urgently for a fever at or above the threshold they gave you, shaking chills, or feeling suddenly unwell.
Infection can become serious quickly when white blood-cell levels are low.
3
Does any of this apply?
Book an appointment
Arrange a routine medical appointment for bone or deep-tissue pain that lasts, returns, worsens, or wakes you at night.
A growing lump, unexplained swelling, persistent limp, or reduced joint movement also needs assessment.
Routine treatment questions, manageable side effects, and rehabilitation needs can usually be discussed with the cancer team during normal contact hours.
The article also says
If you are receiving chemotherapy, follow your treatment team's instructions about fever and infection.
Every sign above is quoted from the sofidex article on Ewing's family of tumors. If you are not sure, err upward — it is always reasonable to be checked.