A school nurse is completing routine health evaluations for school-age children. Which of the following manifestation should alert the nurse to the possibility of pediculosis capitis?

Patches of baldness: Patches of baldness on the scalp could be indicative of conditions like alopecia areata, a disorder characterized by hair loss in patches. However, it is not a typical manifestation of pediculosis capitis, which primarily presents with scalp itchiness due to lice bites rather than hair loss. Blisters on the scalp: Blisters on the scalp may suggest other conditions such as herpes simplex infection or contact dermatitis. While scratching from head lice infestation could lead to skin irritation, blisters are not a common presentation of pediculosis capitis. Dry patches on the scalp: Dry patches on the scalp might be caused by conditions like seborrheic dermatitis or eczema. While scalp dryness can occur with pediculosis capitis due to irritation from scratching, it is not a specific symptom associated with head lice infestation. Reports of scalp itchiness: Scalp itchiness is a hallmark symptom of pediculosis capitis. It occurs as a result of lice bites and the body's inflammatory response to their saliva. It is the most characteristic and common manifestation of head lice infestation and often prompts further examination for the presence of lice or their eggs (nits).