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.
Solar Keratosis/Actinic Keratosis (sunspots) Solar keratosis or actinic keratosis (also commonly known as sunspots) are rough, red, scaly, or crusty spots on the skin that are caused by excessive exposure to Ultraviolet Radiation (UVR) from the sun. They are more common on sun-exposed areas, such as the face, nose, ears, chest, forearms, and back of the hands.