A flush valve is a mechanism used to flush a toilet or urinal. The valve and associated hardware are located within the toilet tank or in the body of the urinal. Most toilets have a lever or push button activator, which is used to operate the flush valve.
Photosensitivity (or sun sensitivity) is inflammation of the skin induced by the combination of sunlight and certain medications or substances.This causes redness (erythema) of the skin and may look similar to sunburn.hotosensitivity (or sun sensitivity) is inflammation of the skin induced by the combination of sunlight and certain medications or substances.
Living well with lupus. Photosensitivity is the term used to describe sensitivity to the ultraviolet (UV) rays from sunlight and other light sources, such as indoor fluorescent light.Photosensitivity can cause rashes, fever, fatigue, joint pain, and other symptoms in people with both cutaneous (skin) and systemic lupus.UV rays are especially intense between the hours of 10 a.m. and 4 p.m., at higher altitudes, and in or around the snow and the water.Excess exposure to UV rays is a common trigger for increased disease activity (flare) of both cutaneous lupus and systemic lupus.V rays are especially intense between the hours of 10 a.m. and 4 p.m., at higher altitudes, and in or around the snow and the water. Excess exposure to UV rays is a common trigger for increased disease activity (flare) of both cutaneous lupus and systemic lupus.