There are other causes besides head lice for itchy scalp problems.You seem to have excluded head lice here as well as any scaling rash of her scalp.Fungal infections such as a form of ringworm called 'tinea' is a common problem in young children. Dry scalp is probably the most common cause. Change her shampoo brand and use Elizabeth Anne baby shampoo or a special shampoo called 'Pure shampoo' [available at pharmacies] when you wash her hair. She may respond to using a little cocanut oil massaged into her scalp after washing her hair.
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