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 ].
Cluster headaches, which affect men more often than women, are recurring headaches that occur in groups or cycles. The headaches appear suddenly and are characterized by severe, debilitating pain on one side of the head often accompanied by a watery eye and nasal congestion or a runny nose on the same side of the face.eadaches due to sinus infection can be treated with antibiotics, as well as antihistamines or decongestants. Take the Migraine Quiz: Find out what really triggers that debilitating pain in your head. The type of pain you are experiencing determines the treatment you need.