How to Subscribe
MLS & MLT Comprehensive CE Package
Includes 181 CE courses, most popular
$109Add to cart
Pick Your Courses
Up to 8 CE hours
$55Add to cart
Individual course$25Add to cart
The page below is a sample from the LabCE course Arthropods and the Clinical Laboratory. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

Learn more about Arthropods and the Clinical Laboratory (online CE course)

Mites are small arachnids (eight-legged arthropods). Microscopic in size, usually <1 mm.
Belonging to the class Arachnida, subclass Acari (ticks and mites), most mites are nonpathogenic to humans. However, Demodex and Chiggers are examples of mites that can cause extreme itching.
Demodex is a genus of tiny mites that live in or near hair follicles. Demodex folliculorum and Demodex brevis live in humans, both frequently referred to as eyelash mites, face mites, or skin mites. These hair follicle mites are a normal part of the human facial fauna.
Chiggers are the juvenile (larval) form of mites in the family Trombiculidae. Chiggers do not burrow into the skin, instead, they have feeding structures that are inserted into the skin. Chiggers can cause an intense hypersensitive reaction (itching).
Of the many types of mites, scabies is the most important.
13. CDC/ C Philip. Image# 15851. "This is an image that was donated to the Centers for Disease Control (CDC), by Dr. Cornelius B. Philip of the U.S. Public Health Service, at the National Institute of Allergy and Infectious Diseases (NIAID) Rocky Mountain Laboratories (RML) in 1965. It depicts an adult chigger poised on the head of a pin." PHIL public domain. Created 1965.
14. CDC. Image# 3416. "This illustration depicts the life cycle of Sarcoptes scabiei, the causal agent of scabies." PHIL public domain. Created 2003.

Chigger (mite, on head of pin). (13)
Scabies mite life cycle. (14)