Cluster Headache: Overview, Symptoms, Causes and Treatment

Cluster Headache pages perform better when they explain what usually brings a patient or caregiver to this diagnosis in the first place. Instead of treating the condition as an isolated encyclopedia entry, the strongest pages map it to the symptom clusters that commonly trigger search demand, such as Headache, Facial Pain, Eye Pain, Eye Redness. Cluster headaches are one of the most painful conditions, causing severe unilateral pain around one eye, accompanied by tearing, nasal congestion, and restlessness. They occur in cyclical patterns (clusters) and respond to oxygen therapy and triptans. This page now strengthens that clinical pathway by tying the condition more explicitly to actionable questions like How Is Cluster Headache Diagnosed? Tests, Criteria & Process, Treatment for Cluster Headache: Options, Medications & Outlook, Symptoms of Cluster Headache: Complete Clinical List, plus direct routes into comparison and differential content that reduce semantic overlap with neighbouring condition pages.