Tantrums are common in toddlerhood, but extreme behavior can indicate a problem. Reach out to your pediatrician if tantrums happen multiple times per day or if they escalate for long periods. It is typical for toddlers to test limits as they learn to assert their independence. Encourage your toddler's developing sense of autonomy by giving them choices and teaching them to do things for themselves (while enforcing safety rules), which may reduce behavior problems.