Hydroxyzine (/haÉªËdrÉksÉ¨ziËn/ ; sold as Vistaril, Atarax) is a first-generation antihistamine of the diphenylmethane and piperazine class.It was first synthesized by Union Chimique Belge in 1956 and was marketed by Pfizer in the United States later the same year, and is still in widespread use today.ydroxyzine (/haÉªËdrÉksÉ¨ziËn/ ; sold as Vistaril, Atarax) is a first-generation antihistamine of the diphenylmethane and piperazine class.
Meningitis can also be caused by the direct spread of a nearby severe infection, such as an ear infection (otitis media) or a nasal sinus infection (sinusitis). An infection can also occur any time following direct trauma to the head or after any type of head surgery.
General Discussion. Meningitis is characterized by inflammation of the membranes (meninges) around the brain or spinal cord. The disorder can occur in three different forms: adult, infantile, and neonatal.This inflammation may be caused by different types of bacteria, viruses, fungi, or malignant tumors.Chemical reactions to certain injections into the spinal canal can also cause Meningitis. This inflammation can begin suddenly (acute) or develop gradually (subacute).his inflammation may be caused by different types of bacteria, viruses, fungi, or malignant tumors. Chemical reactions to certain injections into the spinal canal can also cause Meningitis. This inflammation can begin suddenly (acute) or develop gradually (subacute).