If your 3-year-old child has bumps on their body, it can be difficult to determine the exact cause. It is important to ensure that your child is in good general health. You can try applying fragrance-free moisturizing cream multiple times throughout the day as a basic treatment. Using a gentle, fragrance-free soap and gently patting the skin dry instead of rubbing it can also help. It is recommended to apply the moisturizing cream promptly after bathing. If the bumps persist or worsen, it is advisable to consult a healthcare professional for further evaluation and guidance.