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.
Medical Definition of Pain, shingles. Pain, shingles: Localized pain in the area of involvement of shingles. When such pain persists beyond one month it is referred to as postherpetic neuralgia. The most common complication of shingles is postherpetic neuralgia. This occurs when the pain associated with shingles persists beyond one month, even after the rash is gone. The pain can be severe and debilitating and occurs primarily in persons over the age of 50.