3284 Ramos Circle, Sacramento, CA 95827 +1 (916) 736-1100 info@restconenviro.com 8:00am-5:00pm

Glossary

Habit Spasms

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

Hazardous Air Pollutants

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

Health Canada, Health Protection Branch

Material Safety Data Sheets with health and safety Information on Infectious microorganisms. Including Aspergillus and other molds and airborne biologicals.
(613) 957-1779

Hemiballismus

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.

Hemiplegia

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

HEPA

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

Hippocampus

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

Humidifier

A device to add moisture to air.

Humidifier fever

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.

Humidistat

 

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

HVAC

Acronym for heating, ventilating, and air conditioning system.

Hydronic Heat

Heat transferred from a boiler, to conditioned water, to a radiator in the living space (Called hydropic because water [hydro-] is the medium of heat transfer).

Hypersensitivity Diseases

Diseases characterized by allergic responses to animal antigens. The hypersensitivity diseases most clearly associated with indoor air are asthma, rhinitis, and hypersensitivity pneumonitis. Hypersensitivity pneumonitis is a rare but serious disease that involves progressive lung damage as long as there is exposure to the causative agent.

Hypersensitivity Pneumonitis

A group of respiratory diseases that involve inflammation of the lungs. Most forms are thought to be caused by an allergic reaction triggered by repeated exposures to biological contaminants.

Hypokinesis

Abnormally decreased mobility; abnormally decreased motor function or activity.

Hypothalamus

Controls pituitary; regulates temperature, heart rate, blood pressure, food and water intake (autonomic functions, multi-glandular control); constitutes less than 1% of brain.