Chemical pneumonitis

Chemical pneumonitis is inflammation of the lung caused by irritation from aspirated vomitus or barium used in gastro-intestinal imaging, ingested gasoline or other petroleum distillates, ingested or skin absorbed pesticides, gases from electroplating, or other irritants. It is sometimes called a "chemical pneumonia", though it is not infectious. May also be caused by the use of inhalants.

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Mendelson's syndrome is a type of chemical pneumonia.

Mineral oil should not be given internally to young children, pets, or anyone with a cough, hiatus hernia, or nocturnal reflux, because it can cause complications such as lipoid pneumonia.[1] Due to its low density, it is easily aspirated into the lungs, where it cannot be removed by the body. In children, if aspirated, the oil can work to prevent normal breathing, resulting in death of brain cells and permanent paralysis and/or retardation.