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
Get emergency help for:
New leg weakness or difficulty walking
Numbness around the genitals, buttocks, or inner thighs
New loss of bladder or bowel control
Severe back pain with weakness or numbness
Chest pain, severe breathlessness, fainting, or confusion
The combination of back pain and new nerve symptoms can indicate pressure on the spinal cord and needs immediate assessment.
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 prompt medical advice if you suddenly cannot pass urine or develop fever or chills after a prostate biopsy or during treatment.
3
Does any of this apply?
Book an appointment
Arrange a routine appointment if you develop persistent urinary changes, blood in urine or semen, erection changes, or ongoing pain in the back, hips, or pelvis.
These symptoms often have causes other than cancer, but they should be assessed.
If you have already been diagnosed, contact your cancer team about new symptoms, treatment side effects, worsening pain, or concerns about follow-up.
And for anyone, someone who:
has noticed a lump, a mole that has changed, or unexplained weight loss
Every sign above is quoted from the sofidex article on Prostate cancer. If you are not sure, err upward — it is always reasonable to be checked.