A communication disorder is any disorder that affects an individual's ability to comprehend, detect, or apply language and speech to engage in discourse effectively with others. The delays and disorders can range from simple sound substitution to the inability to understand or use one's native language. According to DSM-5, there are four main types of Communication Disorders: Language Disorder, Speech Sound Disorder, Child-Onset Fluency Disorder (Stuttering), and Social (Pragmatic) Communication Disorder. Some causes of communication problems include hearing loss, neurological disorders, brain injury, vocal cord injury, autism, intellectual disability, drug abuse, physical impairments such as cleft lip or palate, emotional or psychiatric disorders, and developmental disorders.