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The main Section 8 program involves the voucher program. A voucher may be either "project-based"—where its use is limited to a specific apartment complex (public housing agencies (PHAs) may reserve up to 20% of its vouchers as such [11])—or "tenant-based", where the tenant is free to choose a unit in the private sector, is not limited to specific complexes, and may reside anywhere in the ...
Brain sections related to autism. Many causes of autism, including environmental and genetic factors, have been recognized or proposed, but understanding of the theory of causation of autism is incomplete. [1] Attempts have been made to incorporate the known genetic and environmental causes into a comprehensive causative framework. [2]
Approximately 8 in 10 people with autism have a mental health problem in their lifetime, in comparison to 1 in 4 of the general population. [132] [133] [134] A 2019 meta-analysis found autistic people to be four times more likely to have depression than non-autistic people, with approximately 40% of autistic adults having depression. [135]
Autism is associated with several genetic disorders, [4] perhaps due to an overlap in genetic causes. [5] About 10–15% of autism cases have an identifiable Mendelian (single-gene) condition, chromosome abnormality, or other genetic syndrome, [6] a category referred to as syndromic autism.
In children, the most common cause is a stroke of the ventral pons. [9]Unlike persistent vegetative state, in which the upper portions of the brain are damaged and the lower portions are spared, locked-in syndrome is essentially the opposite, caused by damage to specific portions of the lower brain and brainstem, with no damage to the upper brain.
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Typical autism, the best-known; Asperger syndrome (9% of autism diagnoses); Rett syndrome; and; Childhood disintegrative disorder (CDD). The first three of these disorders are commonly called the autism spectrum disorders; the last two disorders are much rarer, and are sometimes placed in the autism spectrum and sometimes not. [2] [3]
Classic autism - (or Kanner's syndrome) the first described form of autism written about in 1943; Pervasive developmental disorder (PDD) – as opposed to specific developmental disorders (SDD), refers to a group of five disorders characterized by delays in the development of multiple basic functions including socialization and communication.