<unk>  <unk>  is a condition in which people in a<unk>  suffer from symptoms of illness or become infected with chronic disease from the<unk>  in which they work or reside. The outbreaks may or may not be a direct result of inadequate cleaning or inappropriate cleaning methods.<unk>  has also been used to describe staff concerns in post-war brutalist-style<unk> s with misplanned<unk>  aerodynamics, defects in the construction materials or assembly process and-or inadequate maintenance. Certain symptoms tend to increase in severity with the time people spend in the<unk> ; often improving over time or even disappearing when people are away from the<unk> .<unk>  is also used interchangeably with<unk> -related symptoms", which orients the name of the condition around patients' symptoms rather than a "sick"<unk> . A 1984 World Health Organization (WHO) report suggested up to 30% of new and remodeled<unk> s worldwide may be subject of complaints related to poor indoor air quality. Other causes have been attributed to contaminants produced by outgassing of some types of<unk>  materials, volatile organic compounds (VOC), improper exhaust ventilation of ozone (byproduct of some office machinery), light industrial chemicals used within, or lack of adequate fresh-air intake/air filtration (see minimum efficiency reporting value). The main identifying observation is an increased incidence of complaints of symptoms such as headache, eye, nose, and throat irritation, fatigue, and dizziness and nausea. In fact the 1989 Oxford English Dictionary defines<unk>  in that way. The World Health Organization created a 484-page tome on indoor air quality back in 1984 when<unk>  was attributed only to non-organic causes, and suggested that the book might form a basis for legislation or litigation. Case studies can contribute to a better understanding and management of<unk> .<unk><unk>  causes are frequently pinned down to flaws in the heating, ventilation, and air conditioning (HVAC) systems. However, there have been inconsistent findings on whether air conditioning systems result in<unk>  or not. More recently,<unk><unk>  was confirmed as a vector for the transmission of SARS in 2003. Norovirus has also been linked with<unk> s because of "the small inoculum required to produce infection (<100 viral particles), prolonged viral shedding, and its ability to survive in the environment." Many norovirus outbreaks have been traced back to cruise ships with food service in unsanitary conditions, or filthy personal hygiene around the toilet.
Sick building syndrome
FACES syndrome
Roemheld syndrome
Death-grip syndrome
Pfeiffer syndrome
MASA syndrome
Tension myositis syndrome
Raine syndrome