When does anxiety in children become a medical concern?You may notice that your child is a worrier. When you schedule a babysitter, your kid has prepared a list of interview questions to ask the sitter before being ok with it. When you're 5 minutes late to picking them up, they're in tears. They need to walk through any potential problems and come up with five solutions whenever faced with a new situation. You're happy to help! But when is it too much?