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
These may indicate reduced circulation but are not always emergencies.
Call emergency services for:
New chest pressure, squeezing, or pain, especially with sweating or nausea
Sudden facial drooping, arm weakness, speech difficulty, or loss of balance
A suddenly painful, pale, numb, or cold arm or leg
Severe upper abdominal pain with persistent vomiting
These symptoms can indicate a heart attack, stroke, sudden loss of limb blood flow, or pancreatitis.
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 for new leg pain while walking, a slow-healing foot wound, or a foot that is repeatedly colder or paler than the other.
Do not wait for a routine appointment.
3
Does any of this apply?
Book an appointment
Arrange a routine appointment if blood tests repeatedly show both high cholesterol and high triglycerides, particularly if LDL cholesterol does not explain the total cholesterol level.
Yellow-orange palm creases, unexplained xanthomas, or a family history of unusual mixed lipid results also need assessment.
Every sign above is quoted from the sofidex article on Familial dysbetalipoproteinemia. If you are not sure, err upward — it is always reasonable to be checked.