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 help for severe confusion, collapse, seizures, difficulty breathing, inability to stay awake, or signs of severe dehydration.
These may indicate dangerously high or low blood glucose or another serious problem.
Emergency assistance is needed.
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
Prompt medical advice is important if you have:
a new foot blister, cut, ulcer, swelling, or colour change
worsening numbness or pain in your feet
repeated low blood glucose episodes
vomiting or diarrhea that affects eating, drinking, or medicine use
persistently high glucose while unwell
sudden changes in vision
3
Does any of this apply?
Book an appointment
Arrange a routine appointment if you have ongoing thirst, frequent urination, unexplained tiredness, blurred vision, repeated infections, or slow-healing wounds.
You should also seek a review if home glucose readings are repeatedly outside the range agreed with your healthcare team.
The article also says
If low blood glucose causes unconsciousness, the person should not be given food or drink by mouth.
Every sign above is quoted from the sofidex article on Type 2 diabetes. If you are not sure, err upward — it is always reasonable to be checked.