Table 4.

Secondary mimics of NDPH

• Low or raised CSF pressure (Spontaneous CSF leak, Idiopathic intracranial hypertension, Intracranial mass lesion) • Cerebral venous thrombosis • Cranial artery dissection • Cranial arteritis • Posttraumatic headache (subarachnoid hemorrhage, subdural hematoma, …) • Meningitis • Sphenoid sinusitis • Contact-point headache (caused by contact of intranasal structures)