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What is the professional term for head lice?

  1. Dermatitis

  2. Pediculosis capitis

  3. Ectoparasite

  4. Folliculitis

The correct answer is: Pediculosis capitis

Head lice, also known as "pediculosis capitis," are small parasitic insects that commonly infest the scalp and cause itching and irritation. "Dermatitis" refers to a broad term for skin inflammation and does not specifically refer to head lice. "Ectoparasite" is a general term for any external parasite, including head lice, but is not the professional term for specifically head lice. "Folliculitis" is a condition where hair follicles become inflamed, often due to infection, and is not the specific term for head lice. Therefore, the professional term for head lice is "pediculosis capitis," making B the correct answer.