Hyperpyrexia as the Presenting Symptom of Intracranial Hypotension.

Hyperpyrexia might be a presenting symptom of intracranial hypotension, likely, secondary to hypothalamic dysfunction and compression. In our case, hyperpyrexia was reversible as the intracranial hypotension was emergently treated. Spontaneous intracranial hypotension might be difficult to diagnose, especially if it presented with non-classical symptoms like fever; thus, physicians should be aware of such association.