Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Seek emergency care for sudden weakness, facial drooping, trouble speaking, severe new headache, major vision loss, a first seizure, repeated seizures, loss of consciousness, or rapidly increasing confusion.
Contact a clinician promptly for new brief episodes of tingling, weakness, altered vision, speech difficulty, unusual headaches, seizures, or a meaningful decline in thinking or walking.
Even if symptoms resolve, they may need timely assessment.
These may indicate a stroke or another urgent brain condition.
Routine follow-up may involve primary care and a neurologist with experience in stroke or cognitive disorders.
Visits often include blood pressure review, medication reconciliation, questions about new neurologic episodes, and assessment of memory, walking, mood, and daily function.
The article also says
Repeat brain imaging is not required on the same schedule for everyone.
It may be considered after new symptoms, to monitor CAA-related inflammation, or when imaging results could affect a treatment decision.
This includes decisions about anticoagulants or anti-amyloid treatment.
Every sign above is quoted from the sofidex article on Cerebral amyloid angiopathy. If you are not sure, err upward — it is always reasonable to be checked.