Hyperventilation and controlled breathing techniques for Cluster Headache aim to modulate autonomic nervous system activity and cerebral blood flow through rapid respiratory manipulation. These techniques can trigger parasympathetic activation, potentially reducing sympathetic tone and influencing vagal nerve stimulation, which may interrupt the trigeminal-autonomic reflex responsible for cluster headache pathogenesis. By altering carbon dioxide levels and inducing transient respiratory alkalosis, these breathing methods can provide acute symptomatic relief through neurophysiological modulation.