Symptoms of scabies are itching, red bumps, pimple-like nodules, and burrows in the skin. Common areas of infection are skin folds, webbing of fingers, elbow, knee, toes, and feet. Itching is intense, especially after 2 weeks of the first manifested signs. The intensity of skin discomfort is such that sleep is nearly impossible for most sufferers. It is also not unusual to have skin sores, which are caused due to constant scratching of the infected sites.