### animal | arthropod | mite:

Dust mite
* are a common cause of asthma in children
  - frequent cause of asthma
* are a major cause of allergic reactions and asthma
  - allergies and asthma
  - culprit
  - reality in most parts of the world, except where it is unusually dry or very cold
* are a type of allergen, a substance that can cause an allergic reaction in some people
  - arachnids that belong to the same group as spiders
  - creatures that are related to spiders and ticks
  - extremely small
  - found in most areas of the world
  - hardy creatures that live well and multiply easily in warm, humid places
  - harmless to most people
  - impossible to completely eliminate from living quarters
  - in the arachnid family which includes spiders, scorpions and ticks
* are located in beds
  - cellars
  - rugs
  - members of the same family as spiders
* are microscopic and found in ordinary household dust can cause allergic reactions
  - animals that cause allergic reactions
  - creatures that eat skin particles and dander
  - insects which thrive on food particles and the scales shed by human skin
  - organisms that can live and thrive throughout homes and businesses
* are microscopic organisms that feed off of dead human skin
  - on flakes of sloughed-off skin
  - live in upholstered furniture and carpets
  - which live in bedding, rugs, and upholstered furniture
  - microscopic, eight-legged creatures that thrive in humid, dusty environments
  - most common in humid climates
  - of microbial length
* are one of the most common causes of allergies and are present year-round
  - types of carpet beetles
  - oval shaped with eight hairy legs, no eyes, no antenna and a tough translucent shell
  - perhaps the most common cause of perennial allergic rhinitis
  - possibly the number one cause of asthma problems in the home
  - present all year long and are found in large quantities in carpeting and bedding
  - probably impossible to avoid completely
  - rather fragile creatures and they can easily be broken apart
  - second only to pollen in causing allergic reactions
  - so small they are invisible to the naked eye
* are the biggest cause of allergic reactions in the home
  - culprits that cause breathing problems for many allergy sufferers
  - main source of allergens in house dust
* are the most common allergen in the world
  - important to avoid, followed closely by cats and certain types of mold
  - single most frequent trigger for asthma attacks
* are tiny arthropods that can be found almost everywhere
  - transparent creatures that feed on human skin flakes
* are tiny, microscopic animals that are found in house dust
  - tiny bugs that live in cloth and carpets
  - too small to bite a human
  - universal in indoor environments
* are very small and look like a cross between spiders and ticks
  - tiny spider type scavengers that recycle dust particles into editable food
* can also be a factor in environmental illness
  - contribute to asthma
* cause problems
  - respiratory problems
* colonize in mattresses, carpets, and upholstered furniture.
* eat skin cells shed by people, and they thrive in warm, humid environments.
* feed on dead skin
  - substances
* have no natural predator so they just keep multiplying.
* occur naturally and can appear in nearly all homes.
* pose another respiratory threat.
* require certain conditions beyond a food supply in order to thrive and reproduce.
* survive a normal hot water washing of bed sheets
  - on diets
* tend to thrive in older homes and areas of high humidity.