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
Move away and follow the emergency instructions provided by the treatment centre.
Seek emergency help for severe breathing difficulty, chest pain, a seizure, fainting, sudden weakness or confusion, or heavy uncontrolled bleeding.
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 team promptly for:
Fever at or above the threshold they gave you
Repeated vomiting, severe diarrhoea, or difficulty drinking
Increasing pain, skin breakdown, bleeding, or signs of infection
New trouble passing urine or opening your bowels
An internal radiation applicator or implant that moves or falls out
3
Does any of this apply?
Book an appointment
For routine concerns, contact the radiation team during office hours about worsening fatigue, skin irritation, eating problems, bowel or bladder changes, or symptoms that interfere with daily life.
The article also says
Do not touch a displaced radioactive source.
Every sign above is quoted from the sofidex article on Radiation therapy. If you are not sure, err upward — it is always reasonable to be checked.