Quantifying the Global Burden of Extreme Pain from Cluster Headaches

Abstract

Cluster headaches are considered among the most painful conditions, often described as excruciating and significantly more painful than childbirth, gunshot wounds, or broken bones. Affecting approximately 1 in 1,000 people, with 1.5 to 5.6 million adults experiencing cluster headaches annually, this neglected condition imposes a substantial global burden. Patients experience attacks of severe pain behind the eye, lasting 15 minutes to 3 hours, with episodic bouts lasting 1–12 weeks and chronic cases experiencing shorter remissions. Attacks typically occur 3–4 times daily at predictable times, with some experiencing up to 20. Treatment options are limited, but tryptamines (psilocybin, LSD, DMT) show promise, though restricted by legal access. Current health metrics, like DALYs, undervalue the extreme suffering associated with cluster headaches, prompting exploration of alternative metrics like Years Lived with Severe Suffering (YLSS) and Days Lived with Extreme Suffering (DLES). Globally, approximately 74,200 person-years are spent annually in cluster headache pain, with 46,200 at severe (≥7/10) and 13,600 at extreme (≥9/10) intensity, equating to nearly 5 million person-days of extreme suffering annually. Re-weighting extreme pain to reflect its disproportionate burden may elevate cluster headaches as a top global health priority. – AI-generated abstract.