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.
Viral infections are the most common cause of meningitis, with bacterial infections being the second most common cause. Additional and more rare causes of meningitis include parasites, fungi, and causes that are non-infectious such as ones related to drugs. Meningitis caused by a viral infection is sometimes referred to as, 'aseptic meningitis,' and is serious, although rarely fatal in people with average immune systems. The symptoms of viral meningitis usually last between 7 and 10 days, and people often experience a complete recovery.