Sarcoptes scabiei is a microscopic mite that causes scabies, a highly contagious skin condition. These tiny parasites burrow into the outer layer of the skin, leading to intense itching and irritation. Scabies can spread through close physical contact, making it common in crowded living conditions. The life cycle of Sarcoptes scabiei involves several stages, including eggs, larvae, and adult mites. Treatment typically includes topical medications that kill the mites and relieve symptoms. Good hygiene and washing contaminated clothing and bedding are essential to prevent reinfestation and further spread of the condition.