These signs are often found in crevices of the body, such as on the webs of fingers and toes, around the genital area, in stomach folds of the skin, and under the breasts.Symptoms typically appear two to six weeks after infestation for individuals never before exposed to scabies. For those having been previously exposed, the symptoms can appear within several days after infestation. However, symptoms may appear after several months or years. Crusted scabies
The elderly, disabled, and people with impaired immune systems, such as those with HIV/AIDS, cancer, or those on immunosuppressive medications, are susceptible to crusted scabies (also called Norwegian scabies). On those with weaker immune systems, the host becomes a more fertile breeding ground for the mites, which spread over the hosts body, except the face. The mites in crusted scabies are not more virulent than in noncrusted scabies; however, they are much more numerous (up to two million). People with crusted scabies exhibit scaly rashes, slight itching, and thick crusts of skin that contain large numbers of scabies mites. For this reason, persons with crusted scabies are more contagious to others than those with typical scabies. Such areas make eradication of mites particularly difficult, as the crusts protect the mites from topical miticides/scabicides, necessitating prolonged treatment of these areas. Cause
Scabies mite
In the 18th century, Italian biologists Giovanni Cosimo Bonomo and Diacinto Cestoni (1637–1718) described the mite now called Sarcoptes scabiei, variety hominis, as the cause of scabies.
Uterine tachysystole is a condition of excessively frequent uterine contractions during pregnancy. It is most often seen in induced or augmented labor, though it can also occur during spontaneous labor.Because contraction counts are often measured over periods of ten minutes but averaged over periods of thirty minutes, there can be slight differences in how the cutoff is calculated. Generally it is defined as more frequently than once every two minutes. Although definitions may vary among studies, most use the terms defined by the American Congress of Obstetricians and Gynecologists (1999a) to describe increased uterine activity as follows:

Uterine tachysystole is defined as  more than 5 contractions in 10 minutes, averaged over a 30-minute window. Uterine hypertonus is described as a single contraction lasting longer than 2 minutes. Uterine hyperstimulation is when either condition leads to a nonreassuring fetal heart rate pattern.The American Congress of Obstetricians and Gynecologists amended these definitions in 2008. Uterine tachysystole is defined as more than 5 contractions in 10 minutes, averaged over a 30-minute period. The terms "hypertonus" and "hyperstimulation" are not recommended to be used. Uterine tachysystole has been reported to follow vaginally administered Prostaglandin E2 in 1 to 5 percent of women (Brindley and Sokol, 1988; Rayburn, 1989). It can be associated with placental abruption and perhaps with uterine leiomyomas. It can also refer to hyperstimulation with oxytocin. == References ==