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
Call emergency services immediately if speech difficulty begins suddenly.
This is important even if the problem is mild or goes away.
Temporary symptoms can be caused by a transient ischaemic attack, sometimes called a TIA or “mini-stroke.”
Treat speech difficulty as an emergency when it occurs with:
Facial drooping or weakness on one side
Arm or leg weakness, numbness, or poor coordination
New confusion or trouble understanding words
Sudden vision loss, severe headache, dizziness, or loss of balance
A seizure, collapse, or serious head injury
Severe choking, breathing difficulty, or inability to swallow
Possible overdose, poisoning, or very low blood sugar
Do not drive yourself if a stroke or other emergency is possible.
And for anyone, someone who:
has sudden weakness or drooping on one side of the face or body, slurred speech, or sudden confusion
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 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 same-day medical advice for a new speech change developing over hours or days, rapid worsening, or speech problems after starting or changing a medicine.
New coughing, choking, or a wet-sounding voice during meals also needs prompt assessment because swallowing may be affected.
3
Does any of this apply?
Book an appointment
For routine care, book an appointment if the change persists, keeps returning, becomes more noticeable, or interferes with work, relationships, eating, or daily activities.
Longstanding speech difficulties can also be assessed if you would like support.
Every sign above is quoted from the sofidex article on Speech impairment in adults. If you are not sure, err upward — it is always reasonable to be checked.