A dessicant is a hygroscopic substance used to produce (What?) in its vicinity?
Desiccant Desiccant A desiccant is a hygroscopic substance that induces or sustains a state of dryness (desiccation) in its vicinity; it is the opposite of a humectant. Commonly encountered pre-packaged desiccants are solids that absorb water. Desiccants for specialized purposes may be in forms other than solid, and may work through other principles, such as chemical bonding of water molecules. They are commonly encountered in foods to retain crispness. Industrially, desiccants are widely used to control the level of water in gas streams. Although some desiccants are chemically inert, others are extremely reactive and require specialized handling techniques. The most common
Headache attributed to a substance or its withdrawal Headache attributed to a substance or its withdrawal Headaches can be attributed to many different substances. Some of these include alcohol, NO, carbon monoxide poisoning, cocaine, caffeine and monosodium glutamate. Chronic use of certain medications used to treat headaches can also start causing headaches, known as medication overuse headaches. Headaches may also be a symptom of medication withdrawal. These headaches have been further sub classified by the ICHD2 into A number of different causes contribute to this class of headache. Several common chemicals may be the culprit. Nitrite compounds dilate blood vessels, causing dull and pounding headaches with repeat exposure.