France. While Spain was building its New World empire, France was also exploring the Americas. In 1524, Giovanni da Verrazano was commissioned to locate a northwest passage around North America to India. He was followed in 1534 by Jacques Cartier, who explored the St. Lawrence River as far as present-day Montreal. In 1562 Jean Ribault headed an expedition that explored the St. Johns River area in Florida.
The most common autonomic symptoms that a cluster headache sufferer may experience are pupil constriction, conjunctiva redness, a drooping eyelid, and a runny nose. In rarer cases, autonomic symptoms of blushing and sweating may appear on one side of the head as well.
Cluster headache attacks occur cyclically, hence the name. A bout of regular attacks-cluster periods-can last from a few days, weeks, to even months. This is followed by remission periods during which no headaches are felt.Cluster headaches are not very common-they are said to affect about 1 in every 1,000 people.They affect men more often than women; about 80% of sufferers are men, most of them smokers. Fortunately, they generally have no long-term effects on the sufferer's physical health.luster headache attacks occur cyclically, hence the name. A bout of regular attacks-cluster periods-can last from a few days, weeks, to even months. This is followed by remission periods during which no headaches are felt.