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 now if lumbar pain occurs with:
New inability to pass urine, loss of bladder or bowel control, or numbness around the genitals, anus, or inner thighs
Rapidly worsening leg weakness, especially if both legs are affected
Severe back pain after a major crash, fall, or other significant injury
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
These symptoms can indicate serious nerve pressure or spinal injury and should not wait for a routine appointment.
Arrange urgent, same-day medical advice if you have back pain with fever, chills, or feeling very unwell.
You should also seek prompt assessment after a minor fall if you have osteoporosis or fragile bones, or if the pain is severe and you have a weakened immune system, a recent serious infection, or a history of cancer.
Make an appointment sooner if pain travels down a leg or you develop persistent numbness or weakness.
And for anyone, someone who:
has abdominal pain that is severe, constant, or getting worse
3
Does any of this apply?
Book an appointment
Book a routine appointment if the pain is not starting to improve within a few weeks, repeatedly returns, disrupts sleep, or limits walking, work, or everyday activities.
Every sign above is quoted from the sofidex article on Lumbar pain. If you are not sure, err upward — it is always reasonable to be checked.