Stroke-like migraine attacks after radiation therapy (SMART) syndrome: a diagnostic challenge a decade after cranial irradiation
Aggarawal, Akshayaa K Mon, Nang Soe Yamin Gazi, Mansoor
Aggarawal, Akshayaa K
Mon, Nang Soe Yamin
Gazi, Mansoor
Abstract
Stroke-like migraine attacks after radiation therapy (SMART) syndrome is a rare, late complication of cranial radiotherapy characterized by recurrent neurological symptoms, which may include headaches, hemiparesis, aphasia, seizures and confusion. The condition typically manifests years after radiation exposure, with magnetic resonance imaging (MRI) showing transient, reversible cortical abnormalities in previously irradiated regions. Although often self-limiting, neurological recovery may be incomplete in some cases. We present the case of a 64-year-old elderly male with a prior history of cranial irradiation received in 2015 who was admitted with abnormal body movements. Initial blood investigations and a non-contrast CT head were unremarkable. The MRI brain scan demonstrated deep white matter ischemic changes with no new focal lesions compared to a prior scan. Cerebrospinal fluid analysis was normal. Electroencephalography revealed focal onset seizures with secondary generalization. Following neurology review, antiepileptic therapy was optimized. Based on the clinical history, radiological findings, and seizure disorder, a diagnosis of SMART syndrome was made. The patient gradually improved his level of consciousness with a decrease in seizure activity with good neurological recovery.
MIDER Authors
Affiliations
Walsall Healthcare NHS Trust
Citations
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Date
2025-12-04
Type
Article
Subject
Collections
Citation
Aggarawal AK, Mon NSY, Gazi M. Stroke-Like Migraine Attacks After Radiation Therapy (SMART) Syndrome: A Diagnostic Challenge a Decade After Cranial Irradiation. Cureus. 2025 Dec 4;17(12):e98494. doi: 10.7759/cureus.98494. PMID: 41497923; PMCID: PMC12766145.