Cooler air cannot hold as much moisture so it is released, falling as rain. These mountain barriers create a rain shadow effect that protects the San Juan Islands from the 150 inches of rain that falls annually on the mountainsâ western slopes.
About 100 million Americans suffer from chronic pain, defined as pain that lasts longer than six months. Chronic pain can be mild or excruciating, episodic or continuous, merely inconvenient or totally incapacitating. With chronic pain, signals of pain remain active in the nervous system for months or even years.
Tension headaches: Also called stress headaches, chronic daily headaches, or chronic non-progressive headaches, they are the most common type among adults and teens. They cause mild to moderate pain and come and go over time. Migraines: These headaches are often described as pounding, throbbing pain.