When babies reach the point where they can say some sentences, basically all children will occasionally stumble. They will repeat sounds or repeat whole words, and may “um and ah” to fill in the gaps in a sentence when they can’t think of a word. These problems are called stuttering and are very common in children ages 2-4. The reason for stuttering may be that the child’s speech muscles are not yet working well together, or that the child is more emotionally affected, so they may not be able to speak well when they are anxious, angry or excited. Usually stuttering will disappear naturally as the child grows up, but some will develop more severely and become stuttering, requiring intervention. These children may also have the following symptoms: exceptionally low speech and vocabulary; language that is often not understood; physical symptoms, such as facial twitching and painful expressions when saying the wrong thing; and anxiety and embarrassment over their mistakes, which requires consultation with a doctor. For parents, when a child stutters, it is important to help the baby by “ignoring” it, listening to it calmly and patiently, not correcting it directly, or paying too much attention to the stuttering, which only makes the child more anxious, thus prolonging and aggravating the baby’s stuttering. If you can’t relieve it, you can find a professional for corrective treatment.