Cluster headache

What kind of headache do you have?

The first step towards finding relief is to determine what type of headache or migraine you have. Here's how to tell

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Cluster headache

Description: Sharp, piercing, severe pain developing rapidly in a cyclical or "cluster"

Location: One side, usually around or behind the eye

Duration: 15 minutes to three hours

Frequency: One or more daily during "cluster periods"

Other symptoms: Nasal congestion, runny nose, tearing, red eyes, sensitivity to light