Background: Syndrome of transient Headache and Neurological Deficits with cerebrospinal fluid Lymphocytosis (HaNDL) is a rare disease which can present with focal neurological deficits and mimic stroke. A neurologist-on-duty faced with a HaNDL patient in the first hours might erroneously decide to use thrombolytic drugs, a non-innocuous treatment which has no therapeutic effect on this syndrome.
Case presentation: We present a case where neuroimaging, together with the clinical picture, led to a presumed diagnosis of HaNDL avoiding intravenous thrombolysis.
Conclusions: This report shows the usefulness of multimodal MR imaging in achieving early diagnosis during an acute neurological attack of HaNDL. Our experience, along with that of others, demonstrates that neuroimaging tests reveal the presence of cerebral hypoperfusion in HaNDL syndrome.