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DOID:4
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disease
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A disease is a disposition (i) to undergo pathological processes that (ii) exists in an organism because of one or more disorders in that organism. |
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DOID:0050117
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disease by infectious agent
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A disease that is the consequence of the presence of pathogenic microbial agents, including pathogenic viruses, pathogenic bacteria, fungi, protozoa, multicellular parasites, and aberrant proteins known as prions. |
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DOID:1398
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parasitic infectious disease
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A disease by infectious agent that is carried out by a parasite which by definition is a pathogen that simultaneously injures and derives sustenance from its host. |
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DOID:4110
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parasitic ectoparasitic infectious disease
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A parasitic infectious disease that is caused by organisms that live primarily on the surface of the host. |
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DOID:5502
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lice infestation
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A parasitic ectoparasitic infectious disease that involves infestation of lice, which are blood-feeding ectoparasitic insects of the order Phthiraptera. |
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DOID:5501
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Pediculus humanus capitis infestation
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A lice infestation that involves colonization of the hair and skin by the parasitic insect Pediculus humanus capitis, which feeds on blood several times daily and resides close to the scalp to maintain its body temperature. The symptoms include tickling feeling of something moving in the hair, itching, caused by an allergic reaction to louse saliva, and irritability. |
