original passage: Cluster headaches are relatively uncommon. They affect only 1–3 per thousand people in the world. Cluster headaches affect approximately three times as many men as women.
original sentence: Cluster headaches are relatively uncommon.
sentence2: Would someone who hears accounts in person and in the media of people suffering from chronic migraines, would he or she start to suspect that many of these people are actually suffering cluster headaches instead, due to the relative proabilities?
sentence1: Cluster headaches are nonetheless more common than similar conditions such as chronic migraines. They affect 1–3 per thousand people in the world. Cluster headaches affect approximately three times as many men as women.