Cluster headaches

Also known as: Cluster headache attacks, Suicide headaches (colloquial)

Cluster headaches symptom guide: what it can mean, possible causes, and when to seek care. Educational only.

Overview

Cluster headaches are very severe pains lasting about 15–180 minutes and often returning several times a day. They usually affect one side and may bring tearing or a blocked nose. Diagnosis and treatment come from a clinician—not home self-treatment.

Possible causes

Hypothalamus nerve pathway changes
Alcohol during a cluster period
Smoking
Sleep schedule changes
Genetic factors (in some)

When to see a doctor

Seek care promptly for sudden severe pain, especially a first episode, or pain with weakness/confusion.