What's wrong with a 4-year-old child who doesn't speak?

In general, a 4-year-old child not speaking may be due to being in a developmental stage where language skills are not yet fully mature, meaning they have not yet learned how to speak or express their thoughts. Some children may also remain silent because they are afraid of speaking, feel anxious about social interactions, or fear rejection or ridicule. A poor environment can also contribute to a child's lack of speech, such as a dysfunctional family setting or lack of emotional security. Parents should provide a warm and supportive environment, offering encouragement and reassurance to help their child gain the confidence to speak. If necessary, it is advisable to seek medical evaluation promptly to identify the underlying cause and receive appropriate treatment.