Ans:A. Sarcoptes scabis
Scabies is an intensely pruritic skin condition caused by infestation with the microscopic mite Sarcoptes scabiei.
Sarcoptes scabiei var hominis, and is transmitted from person to person by skin-to-skin contact.
Sarcoptes scabiei mite:
Burrowed into the epidermis, the mite, its faeces and ova laid by females seem to cause the irritation that leads to itching and secondary infection from scratching.
Scabies like warm places, such as skin folds, between the fingers, under fingernails, or around the buttock or breast creases. They can also hide under watch straps, bracelets or rings.