Are both cluster headaches and migraines related to the trigeminal nerve? if so, how are they related? how does the trigeminal nerve affect one's head

Cluster-migraine: This diagnosis is usually used for patients who have features of a migraine headache while going through a cluster episode. In other words, the diagnostic criteria for one type of headache are present with a few characteristics of the other. Fundamental to an understanding of migraine headache is knowledge of the trigemino-vascular complex which is the major pain-signaling structure of the brain.

Superb questions!: You are apparently young and smart. This could be a good research project for you. Cluster headache, like trigeminal neuralgia, produces what is called a "neuralgiform" pain syndrome (no space for details). Migraine is different. But both are neurological syndromes. The exact biological differences are poorly defined. "Cortical spreading depression" is more typical of migraine.