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.
Meningitis is the infection and inflammation of the meninges (covering of the brain and spinal cord: duramater, arachnoid and piamater) and the cerebrospinal fluid. Meningitis is usually caused by bacteria. Virus and fungi can also cause meningitis.he causative organism that involved in meningitis varies with the age of the patient. In newborn it is due to gram-negative bacilli (E.Coli and klebsiella pneumoniae) and group B Streptococcus whereas Haemophilus influenza type b (Hib) is the leading cause in children aged between 2 months to 4 years.