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Title: Infestation  
Author: World Heritage Encyclopedia
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Subject: Bed bug infestation, Phenothrin, List of infectious diseases, Fumigation, Bath treatment (fishkeeping)
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Classification and external resources
ICD-10 B65-B88.9
ICD-9 120-129, 132-134

Infestation refers to the state of being invaded or overrun by host.[2]


In general, the term "infestation" refers to parasitic diseases caused by animals such as arthropods (i.e. mites, ticks, and lice) and worms, but excluding those caused by protozoa, fungi, and bacteria.[3]

External and internal

Infestations can be classified as either external or internal with regards to the parasites' location in relation to the host.

External or porocephaliasis can penetrate viscerally) and includes those involving mites, ticks, head lice and bed bugs.[4]

An internal (or swimmer's itch stays near the surface).

Medically, the term "infestation" is often reserved only for external ectoparasitic infestations[5] while the term infection refers to internal endoparasitic conditions.[6]


  1. ^ "infestation" at Dorland's Medical Dictionary
  2. ^ "Infestation - Definition and More from the Free Merriam-Webster Dictionary". 
  3. ^ Harvard Medical School;  
  4. ^ "Bed Bug Information". 
  5. ^ "Bedbugs". Skin Problems & Treatments Health Center. Retrieved 2013-11-20. 
  6. ^ Leland S. Shapiro; Leland Shapiro (2005). Pathology and parasitology for veterinary technicians. Cengage Learning. pp. 111-.  
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