Neurology — A symptom with a deadline

The visit that ends in reassurance is the one that carries the most risk, because the finding is already gone by the time anyone writes it down.

A resolved focal deficit is not a resolved problem. The examination is normal, the patient feels well, and the story arrives as something that already ended — which is exactly the shape a transient ischaemic attack takes.¹

What follows is not advice. It is three synthetic cases, each showing what Sofya surfaced while the consultation was still open, where the suggestion came from, and what the visit became because of it.

How the branch runs, once the deficit has resolved

fig. 2

A focal deficit that has resolved

Onset under 24 h

Urgent specialist assessment and the indicated imaging while the highest-risk window is open.

Onset 24 h to 7 days

Prompt assessment, with the diagnostic path and prevention plan made explicit.

Onset not established

The missing time becomes the first question, because it changes the branch.

Deficit still present

Not this page: a suspected stroke pathway, not a transient one.

Branches reflect the cited AHA/ASA and NICE sources; local protocols and clinical judgement remain authoritative.¹²

Case 01

The arm that went heavy, then didn't

The reasoning arrives as it happens, one assertion at a time, each with its provenance. Nothing below was written after the visit.

synthetic casea story that sounds closed

Man in his 60s, hypertensive, off one of his pills for weeks. This morning his right arm went heavy, then recovered.

expert skill · neuro red flags

“Heaviness, went away on its own” — a resolved focal deficit is a transient event until proven otherwise. Imaging within 24h.

abcd² ≥4 pending onset · aha/asa 2023 · class i¹

medication safety · reconciliation

“One of the pills” matches three on record. Last fill dates point to lisinopril — stopped ~5 weeks, unconfirmed.

rxnorm 314076 · fill history · 3 candidates⁵

patient memory · 14 months

Creatinine 1.9 mg/dL sat in a lab pdf from April — eGFR 38, never in the problem list. It changes today’s imaging contrast.

loinc 2160-0 · 2026-04-12 · egfr 38⁶

Axial MRI of the brain — fig. 3 · MRI ordered from the active branchNational Cancer Institute · public domain

What changed

The visit ended with same-day assessment arranged and the antihypertensive reconciled — not with a note describing an episode that had resolved.⁶

The eGFR of 38 changed the imaging request itself, so the renal result was not discovered after the decision.⁶

Case 02

Twenty years of aura, and one episode without the headache

A diagnosis carried since her twenties is what makes this dangerous: the label absorbs the new symptom. Aura without headache, lasting longer than her pattern, is a change — and a change in a known diagnosis is a different clinical object than a recurrence.³

What the record held, and what the visit had recordedtable 1

on recordin this visitcode

Migraine with aura, coded 2011Aura, no headache, 40 minichd-3 1.2

Combined oral contraceptive, activeNot mentionedrxnorm 748856

Blood pressure, last 2025-04Not takenloinc 85354-9

Smoking status, never askedUnknownloinc 72166-2

The current WHO medical eligibility criteria make the pairing visible as a decision, instead of leaving two independently correct entries disconnected.⁴

What changed

Two decades of a familiar label stopped absorbing a new symptom. The contraceptive was discussed in the room, and the missing measurement was taken before she left.

Case 03

Anticoagulation paused for a dental appointment, three weeks ago

Nobody made a mistake here. A hold was written, the procedure happened, and the instruction to restart lived in a note that the next clinician had no reason to open. The gap is visible only if something keeps reading the record between visits.⁷

Twenty-two days, as the record tells it

fig. 5

2026-05-14

Last fill, apixaban 5 mg

2026-05-19

Pre-procedure hold, 3 days

2026-05-22

Restart date, no restart

2026-06-13

Today, here for dizziness

CHA₂DS₂-VASc 4 · ICD I48.0 · RxNorm 1114195⁸

What changed

The reason for the visit was not the reason for concern. Interrupted anticoagulation became a coded problem instead of a sentence buried in a dental note.

The three, side by side

table 2

casewhat it sounded likewhat the chart knew

01An episode that already endedA stopped antihypertensive and an eGFR of 38

02A diagnosis she already hasA high-risk pairing, active since 2011

03Dizziness, probably vestibularTwenty-two days without anticoagulation

References

8 sources

Amin HP et al. Diagnosis, workup, risk reduction of transient ischemic attack in the emergency department setting. Stroke. 2023;54:e109–e121. ahajournals.org
National Institute for Health and Care Excellence. Stroke and transient ischaemic attack in over 16s: diagnosis and initial management. NG128, 2019, updated 2022. nice.org.uk
Headache Classification Committee of the International Headache Society. The International Classification of Headache Disorders, 3rd edition. Cephalalgia. 2018;38(1):1–211, section 1.2. ichd-3.org
World Health Organization. Medical eligibility criteria for contraceptive use, 6th ed. Geneva, 2025. who.int
U.S. National Library of Medicine. RxNorm concept 314076, lisinopril 10 mg oral tablet. Accessed 2026-07. dailymed.nlm.nih.gov
Regenstrief Institute. LOINC 2160-0, creatinine in serum or plasma. Accessed 2026-07. loinc.org
Bell CM et al. Association between medication discontinuation and outcomes after transitions of care. JAMA. 2011;306(8):840–847. jamanetwork.com
Van Gelder IC et al. 2024 ESC Guidelines for the management of atrial fibrillation. European Heart Journal. 2024;45(36):3314–3414. academic.oup.com