Local Area Networks. Local area networks (LANs) are used to connect networking devices that are in a very close geographic area, such as a floor of a building, a building itself, or a campus environment. Wide area networks (WANs) are used to connect LANs together.
Antidepressant medicines, which are usually used to treat depression, can be effective in preventing chronic tension headaches. Antidepressants have some pain-relieving properties and may reduce how often headaches occur and how long they last.
1 A neurotransmitter, serotonin, is thought to be involved in migraines because many of the drugs used to treat migraines alter the binding of serotonin to various receptors.  Tension - Tension headaches are caused by muscular strains in the head and neck and/or emotional stress.