CGRP Biologics Rapidly Displace Off-Label Prescribing
Headache specialists are increasingly prescribing CGRP monoclonal antibody biologics developed specifically for cluster headache rather than repurposing migraine or hypertension drugs used off-label for decades. Manufacturers have expanded rare-disease clinical trial investment and regulatory approval capability significantly over the past several years, and specialists increasingly specify disease-specific biologics by default when treating newly diagnosed patients. Major headache centers report CGRP biologic prescribing now covers more than a quarter of preventive treatment volume, up sharply from a small base less than a decade ago. This shift has accelerated markedly since 2023.
Market Impact: Adds 180 new headache specialist ce








