Neurology

ABCD² after suspected TIA

Historical early-stroke risk score after a clinician-assessed transient ischemic attack.

Intended population: Adults after suspected TIA with completely resolved focal symptoms. Ongoing deficits require an acute stroke pathway.

Every suspected TIA requires urgent assessment regardless of ABCD². Do not use it alone to decide discharge, defer imaging, or rule out a stroke mechanism.
Weakness and isolated speech disturbance are mutually exclusive scoring alternatives.

Age (years)

Clinician suspects TIA and all focal symptoms have completely resolved?

Initial systolic BP (mm Hg)

Initial diastolic BP (mm Hg)

Highest qualifying clinical feature

Duration of symptoms

Diabetes mellitus?

Sources and scoring references

Original ABCD² derivation and validation (2007) ↗NICE TIA guidance: scores must not determine referral urgency ↗

Implementation references reviewed October 28, 2026. Verify applicability and unusual or treatment-changing results against the linked references and local guidance.