Summary

We describe a case of a 45-year-old man who presented with a transient syndrome consisting of headache with neurological deficits. Neuroimaging including brain angiography was normal. Cerebrospinal fluid (CSF) analysis revealed an elevated protein and lymphocytic pleocytosis. The diagnosis of a syndrome of Headache and Neurological Deficits with CSF Lymphocytosis (HaNDL) was made after excluding all the other possible causes for the patient's presentation. He made an excellent recovery following a short course of naproxen sodium.