Thunderclap Headache: A Primary Symptom of a Steroid-Responsive Encephalopathy with Autoimmune Thyroiditis

Figure 1

FLAIR images (a–d) showing progressive diffuse signal abnormality involving the white matter of both cerebral hemispheres over 7-year period (a–c) with gradual resolving after steroid treatment (d). (a) June 2012. (b) October 2012. (c) July 2019. (d) February 2020.

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