Press the right-arrow key to activate the backlit keyboard. Press the right-arrow key again, still holding down the Function key, to toggle the keyboard through its three illumination modes: full intensity, half intensity and off.
Cysts can be painful and easily infected, so be sure to see your dermatologist if you have one [source: WebMD ]. Sometimes age is a factor. Some skin conditions that cause scalp sores, such as ringworm, primarily affect children [source: Berman ]. Others, such as pemphigus, primarily affect older adults [source: National Institute of Arthritis and Musculoskeletal and Skin Diseases ].
Headache, Migraine, and Facial Pain. Migraine and Other Vascular HeadachesâSymptoms and Diagnosis. Migraine: The most common of vascular headaches, migraines are thought to involve abnormal functioning of the brain's blood vessels. Migraines cause severe pain on one or both sides of the head, upset stomach, and, at times, disturbed vision. People often describe migraine pain as pulsing or throbbing in one area of the head. During migraines, people become very sensitive to light and sound. They may also become nauseous and vomit.