Treatment of Persistent Headache After Normalization of CSF Pressure

Area of Science:

• Neurology
• Neuroscience
• Cerebrospinal Fluid Dynamics

Background:

• Headache is a primary symptom of intracranial pressure disturbances.
• Headaches may persist despite normalized intracranial pressure in conditions like idiopathic intracranial hypertension (IIH) and spontaneous intracranial hypotension (SIH).
• Persistent headaches after CSF pressure normalization require careful evaluation for alternative etiologies.

Purpose of the Study:

• To review the clinical presentation, mechanisms, differential diagnosis, treatment, prognosis, and monitoring of persistent headaches after intracranial pressure normalization.
• To highlight the challenges in managing persistent headaches in patients with a history of IIH and SIH.
• To inform neurologists about alternative headache causes in patients with prior CSF dynamic disorders.

Main Methods:

• Literature review of clinical presentations, mechanisms, and treatments.
• Analysis of studies on persistent headaches in IIH and SIH.
• Discussion of emerging therapeutic targets, such as erenumab for IIH.

Main Results:

• Headache is a common symptom that may not resolve even after intracranial pressure normalizes.
• Erenumab has shown promise in reducing headache frequency in IIH patients.
• Some SIH patients experience persistent headaches despite radiographic resolution of CSF leaks.

Conclusions:

• Persistent headaches in patients with a history of IIH or SIH warrant a thorough differential diagnosis beyond elevated or low intracranial pressure.
• Neurologists must consider alternative headache etiologies in these patient populations.
• Further research is needed for effective management strategies for persistent headaches in SIH.