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 urgent or emergency help if:
You intend to harm yourself or someone else
You have made a suicide plan or taken steps to carry it out
You cannot keep yourself safe
You are hearing or seeing things others do not, or are losing touch with reality
Call your local emergency number or go to an emergency department.
In the United States, you can call or text 988 for the Suicide & Crisis Lifeline.
Elsewhere, use your local crisis service or emergency number.
If possible, stay with a trusted person and move away from anything you could use to harm yourself.
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 a healthcare professional promptly if symptoms are rapidly worsening, you are struggling to eat or care for yourself, or you experience possible mania, such as very little need for sleep with unusually high energy or risky behaviour.
3
Does any of this apply?
Book an appointment
Arrange a routine appointment if low mood, loss of interest, tiredness, or sleep changes persist for about two weeks, return during the same season, or interfere with everyday life.
Seek earlier advice if you have a history of severe depression or bipolar disorder.
Every sign above is quoted from the sofidex article on Seasonal affective disorder. If you are not sure, err upward — it is always reasonable to be checked.