Syndrome of transient headache and neurologic deficits with cerebrospinal fluid lymphocytosis presenting as acute neurological emergencies

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Abstract
Background The syndrome of transient headache and neurologic deficits with cerebrospinal fluid lymphocytosis (HaNDL) is a self-limited benign disorder of unclear pathogenesis, with diverse clinical manifestations. Cases We report two unusual presentations of this entity. The first case developed a catastrophic picture, characterized by acute elevation of intracranial pressure, necessitating emergency life support. The second case presented with hyperacute-onset mixed aphasia and facial droop, masquerading as acute ischemia of the middle cerebral artery territory. Both patients made full recoveries. Conclusion The possibility of HaNDL should be considered in individuals presenting with unusual patterns of headaches and transient neurological symptoms. Our report will expand the spectrum of this disorder, which will help physicians not only to recognize the unusual manifestations of this rare disorder, but also consider potential therapeutic interventions.

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