What are risks for cluster headaches in children?

See Below:: Cluster headaches are rare in children younger than 10 years of age and only affect approximately 0.1 percent of children age 10 to 18 years. More common in boys. They are deep, excruciating, continuous, and explosive in quality. Commonly cause eye redness and tear production on the side where the pain occurs, a stuffy and runny nose, sweating, a pale appearance and sometimes drooping of eyelid.