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.
Many prescription and nonprescription medicines and supplements can cause headaches. Medicines that contain hormones, such as birth control pills and hormone therapy for menopause. Medicines for erection problems. Caffeine (because of caffeine withdrawal). Some heart and blood pressure medicines.