Cluster headaches are intensely painful and often resistant to simple symptom-based treatments, making a root cause analysis essential. This approach explores potential underlying triggers such as vascular dysfunction, neurological hypersensitivity, circadian rhythm disruption, or hormonal imbalances, rather than focusing only on short-term relief. By investigating lifestyle factors, sleep quality, stress patterns, and possible nutrient deficiencies, clinicians can identify hidden contributors that worsen attack frequency and severity. A thorough root cause analysis enables a more personalised treatment strategy, helping reduce recurrence, improve quality of life, and support long-term brain and vascular health.