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Selective mutism (SM) is an anxiety disorder in which a person who is otherwise capable of speech becomes unable to speak when exposed to specific situations, specific places, or to specific people, one or multiple of which serve as triggers. This is caused by the freeze response. Selective mutism usually co-exists with social anxiety disorder. [1]
The term developmental language disorder (DLD) was endorsed in a consensus study involving a panel of experts (CATALISE Consortium) in 2017. [3] The study was conducted in response to concerns that a wide range of terminology was used in this area, with the consequence that there was poor communication, lack of public recognition, and in some cases children were denied access to services.
Speech disorders affect roughly 11.5% of the US population, and 5% of the primary school population. [5] 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. [6]
Language disorders can also be categorized as developmental or acquired. A developmental language disorder is present at birth while an acquired language disorder occurs at some point after birth. Acquired language disorders can often be attributed to injuries within the brain due to occurrences such as stroke or Traumatic brain injury.
Dyslexia is a common language-based learning disability. Dyslexia can affect reading fluency, decoding, reading comprehension, recall, writing, spelling, and sometimes speech and can exist along with other related disorders. [15] The greatest difficult those with the disorder have is with spoken and the written word.
People diagnosed with the condition can comprehend language and vocalize what they intend to say, however, they are not able to control the way in which the words come out of their mouths. Since dysprosody is the rarest neurological speech disorder discovered [citation needed], not much is conclusively known or understood about the disorder ...
A language disorder is an impairment in the ability to understand and/or use words in context, both verbally and nonverbally. Some characteristics of language disorders include improper use of words and their meanings, inability to express ideas, inappropriate grammatical patterns, reduced vocabulary and inability to follow directions. One or a ...
Expressive language disorder is one of the "specific developmental disorders of speech and language" recognized by the tenth edition of the International Classification of Diseases (ICD-10). As of the eleventh edition (ICD-11, current 1 January 2022), it is considered to be covered by the various categories of developmental language disorder .