Causative organism is
Correct Answer: Phthirus pubis
Description: Pediculosis pubis is caused by the pubic louse, Pthirus pubis, by infesting human pubic hair. The species may also live in other areas with hair, including the eyelashes, causing pediculosis ciliaris. The crab louse or pubic louse (Pthirus pubis) is an insect that is an obligate ectoparasite of humans, feeding exclusively on blood .The crab louse usually is found in the person's pubic hair. Although the louse cannot jump, it can also live in other areas of the body that are covered with coarse hair, such as the eyelashes. infestation in human: Infestation of crab lice is known as pediculosis pubis or phthiriasis pubis. Infestation of the eyelashes is referred to as pediculosis ciliaris or phthiriasis palpebrarum.The main symptom of infestation with crab lice is itching, usually in the pubic-hair area, resulting from hypersensitivity to louse saliva, which can become stronger over two or more weeks following initial infestation. In some infestations, a characteristic grey-blue or slate coloration appears (maculae caeruleae) at the feeding site, which may last for several days. Types of Pediculosis and their causative organisms. Disease Lice Common Name Pediculosis capitis Pediculus humanus var.capitis Head louse Pediculosis corporis Pediculus humanus var.corporis Body louse Pediculosis Pubis Phthirus pubis Pubic louse, crab louse ref Harrison 20th edition pg 1308
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