What Are the Risk Factors for Cluster Headaches?
Studies show that cluster headaches affect 1 out of every 1000 people. This means that they are less common than migraines. Some people may develop two types of headaches. Symptoms of cluster headaches often start to occur between the ages of 20 and 40.
Cluster headaches affect both men and women equally. They are also more common in people who smoke and drink alcohol regularly. Studies also show that people who get cluster headaches may also experience sleep apnea.
What Are the Causes of Cluster Headaches?
Experts are yet to know what causes cluster headaches. The condition is a type of trigeminal autonomic cephalgia which affects the hypothalamus, a brain structure of the autonomic nervous system. Cluster headache usually affects the first branch of the trigeminal nerve. [1] Its symptoms are usually severe sidelocked pain, and occur around and in the eye, tearing.