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UNSEEN INSECT BITES

PRINCIPAL CAUSES OF ITCHES AND BITES OF UNKNOWN ORIGIN

Obscure Biting Arthropods*
mites (e.g., bird, rodent, scabies)
lice
EXTERMINATE fleas QUICK
chiggers
biting midges/mosquitoes
ticks
ELIMINATE bedbugs FAST
Household Products

detergents (especially phosphate-based)
soaps
cosmetics/hair products
ammonia-based cleansers
medications
printing inks (e.g., carbonless)
clothing (especially fire retardant)
ENVIRONMENTAL FACTORS
A. Physical irritants

paper, fabric, or insulation fibers
low humidity
seasonal changes in temperature
static electricity
B. Chemical irritants

formaldehyde (e.g., from particle board, wall and floor coverings)
ammonia
solvents/resins associated with paints and adhesives
tobacco smoke
volatiles from asphalt and tar installation
Health-Related Conditions

pregnancy
communicable diseases (e.g., chicken pox, measles)
stress
diabetes, liver, or kidney disorders
food allergies
insect phobias

*Many of these pests are large enough to be seen without magnification. One should also consider the possibility of delayed irritation such as from bites obtained while outdoors.