Crusted scabies is a severe infestation of scabies mites and eggs in the skin. The scabies mite, Sarcoptes scabiei var hominis, is a microscopic mite also known as the human itch mite. Scabies mites ...

Carrie Madormo, RN, MPH, is a health writer. She has over a decade of experience as a registered nurse, practicing in a variety of fields, such as pediatrics, oncology, chronic pain, and public health ...

A person’s right hand, wrist, and arm six days into their symptoms of scabies. Photo: Cixia/Wikimedia Commons Why it happens: Scabies is caused by an infestation of the arachnid Sarcoptes scabiei, or ...