Bacterial infections such as pneumonia often cause pleurisy. It can also be caused by a virus such as the flu, or by a fungus. Some other things that can cause pleurisy to strike are: Lung cancer. A blood clot in the lung. Other types of cancer that affect the lungs or pleura.
FDA Code of Federal Regulations for Hexylene Glycol and Dipropylene Glycol. Butylene Glycol, Hexylene Glycol, Ethoxydiglycol and Dipropylene Glycol may be used in cosmetics and personal care products marketed in Europe according to the general provisions of the Cosmetics Regulation of the European Union.
Propylene glycol is also used as moisturizer in cosmetic products and as a dispersant in fragrances. There are many other food and industrial uses for propylene glycol. As a food additive, propylene glycol is on the U.S. Food and Drug Administration (FDA) generally regarded as safe list (not to be confused with ethylene glycol, which is extremely toxic if ingested).