Table 1.

Diagnostic criteria for stroke-like migraine attacks after radiation therapy (SMART) syndromeas.

Criteria
A. Remote history of external beam cranial irradiation without evidence of residual or recurrent neoplasm.
B. Prolonged, reversible signs and symptoms referable to a unilateral cortical region beginning years after irradiation. Manifestations may include: Visuospatial deficits Confusion Hemisensory deficits Hemiparesis Aphasia Seizures Headaches with the attacks An antecedent migraine with or without aura starting after irradiation.
C. Transient, diffuse, unilateral cortical gadolinium enhancement of the cerebral gyri sparing the white matter within a previous radiation field.
D. Not attributable to other disorder.

Table taken from Black et al.¹, copyright 2006, Sage Publishing.