1. Stuttering is a communication disorder that can be treated, but cannot be fully cured. The effects vary based on type and time of onset, severity, and treatment. The intensity and early beginning of therapy play a significant role in improvement.

2. In children, stuttering is often recognized during early language development, and can be caused by biological or environmental factors. Biological factors may include mental illnesses or physical impairments. Environmental harms may be due to neglect or over-correction by a caregiver, or other psychological influences.

3. Stuttering is a disorder that can be seen in adults as well. This may continue from childhood, or may be acquired later in life. Factors contributing to the acquisition of stuttering include neurological damage, traumatic experiences, or other illnesses.

4. Although stuttering most obviously affects speech, there are a multitude of other impacts. Social interactions, education, professional employment, and self-esteem are some areas that stuttering may influence.