It is common for children to experience irritations between their thighs, especially if their thighs rub against each other. To help alleviate the irritation, it is recommended to apply a protective ointment like Barrier cream or even vaseline. Avoid using scented soaps and refrain from vigorously drying the skin. Instead, gently pat the area dry and then apply the cream. If the irritation persists for more than 10 days or worsens, it is advisable to consult a doctor for further evaluation.