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Type of communication disorder in which normal speech is disrupted

Speech disorders, impairments, or impediments, are a type of communication disorder in which normal speech is disrupted. This can mean fluency disorders like stuttering, cluttering or lisps. Someone who is unable to speak due to a speech disorder is considered mute. Speech skills are vital to social relationships and learning, and delays or disorders that relate to developing these skills can impact individuals function. For many children and adolescents, this can present as issues with academics. Speech disorders affect roughly 11.5% of the US population, and 5% of the primary school population. Speech is a complex process that requires precise timing, nerve and muscle control, and as a result is susceptible to impairments. A person who has a stroke, an accident or birth defect may have speech and language problems.

Many of these types of disorders can be treated by speech therapy, but others require medical attention by a doctor in phoniatrics. Other treatments include correction of organic conditions and psychotherapy. In the United States, school age children with a speech disorder are often placed in special education programs. Children who struggle to learn to talk often experience persistent communication difficulties in addition to academic struggles. More than 700,000 of the students served in the public schools' special education programs in the 2000–2001 school year were categorized as having a speech or language impairment. This estimate does not include children who have speech and language impairments secondary to other conditions such as deafness". Religion and culture also play a large role in the social effects of speech disorders. For example, in many African countries like Kenya cleft palates are largely considered to be caused by a curse from God. This can cause people with cleft palates to not receive care in early childhood, and end in rejection from society.

Language disorders are usually considered distinct from speech disorders, although they are often used synonymously. Speech disorders refer to problems in producing the sounds of speech or with the quality of voice, where language disorders are usually an impairment of either understanding words or being able to use words and do not have to do with speech production.