Tantrums typically begin around 15 to 18 months, escalate around age 2 to 3 years, and decrease as children develop better communication skills. When children have tantrums, it may look like they have lost control and will never stop kicking and screaming. As long as they are safe, walk away or put them in a “time out” until they are calm. Time out should be 2 minutes or less for 2-year-olds. If it happens in a public place, try to pick them up, hold them close, and rock them. Talk soothingly—say, “I love you, it's okay,” or “take a deep breath: In, out, in, out”—until they are calm. Try to find a restroom for privacy until the crying stops. Or simply take them home if you can.
It's possible the tantrum isn't over, especially if you told them “no” to a certain item in the store, and then they spot it again. Don't give in, but once in a while a compromise is okay.
Don't ignore behaviors such as kicking, hitting, biting, or throwing. These should not be confused with tantrums.