Seemingly voluntary movements but which individuals feel compelled to do to relieve tension (eg. sniffing, clearing of throat, pulling on collar).

189 chemicals considered by the EPA to be hazardous to human health.

Hyperkinetic movement disorder characterized by violent flinging motions in the arm contralateral to a lesion in or near the subthalamic nucleus. May be due to damage in basal ganglia.

Neural motor condition affecting one side of the body only. Paraplegia affects both sides.

High efficiency particulate arrestance (filters).

Part of the limbic system; involved in memory storage; damage produces effects on short- to long-term memory, limbic system.

A device to add moisture to air.

A respiratory illness that may be caused by exposure to toxins from microorganisms found in wet or moist areas of humidifiers and air conditioners. Also called air conditioner fever or ventilation fever.

A device, actuated by changes in humidity, used for the automatic control of relative humidity.

Acronym for heating, ventilating, and air conditioning system.