Cerebral Autosomal Dominant Arteriopathy With Subcortical Infarcts and Leukoencephalopathy (CADASIL) in a 32-Year-Old Male Presenting With a Transient Ischemic Attack (TIA).

This case report describes a 32-year-old male with a familial history of cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL), presenting with right-sided weakness and visual disturbances. The symptoms, consistent with a transient ischemic attack (TIA), resolved spontaneously. Subsequent evaluation, including MRI brain imaging, revealed a high T2 signal in subcortical white matter in the frontal and parietal lobes, consistent with CADASIL. Positive NOTCH3 testing confirmed the diagnosis, leading to the initiation of antiplatelet and statin therapy under the care of both stroke and neurology teams.