What organism causes scabies?

Scabies is caused by a specific type of parasite known as the Sarcoptes scabiei mite. These microscopic mites burrow into the skin, leading to intense itching and a rash, which are the hallmark symptoms of the condition. The other options—viruses, bacteria, and fungi—represent different categories of infectious agents but do not cause scabies. Viruses typically cause illnesses like the flu or the common cold, bacteria can lead to infections such as staph or strep throat, and fungi are responsible for conditions like athlete's foot or ringworm. In the case of scabies, the involvement of a parasite is critical, making the identification of the causative agent as a parasite essential for understanding and treating the condition effectively.