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X-linked ichthyosis. X-linked ichthyosis (abbreviated XLI) is a skin condition caused by the hereditary deficiency of the steroid sulfatase (STS) enzyme that affects 1 in 2000 to 1 in 6000 males. [2] XLI manifests with dry, scaly skin [3] and is due to deletions [4][5] or mutations [6] in the STS gene. XLI can also occur in the context of ...
Conditions comorbid to autism. Autism spectrum disorder (ASD) is a neurodevelopmental disorder that begins in early childhood, persists throughout adulthood, and affects any person in this way: social communication and restricted, repetitive patterns of behavior. [1] There are many conditions comorbid to autism spectrum disorder, such as ...
Named after. Hans Asperger. Asperger syndrome (AS), also known as Asperger's syndrome or Asperger's, is a diagnosis formerly used to describe a neurodevelopmental condition characterized by significant difficulties in social interaction and nonverbal communication, along with restricted, repetitive patterns of behavior and interests. [5]
Classic autism. Classic autism, also known as childhood autism, autistic disorder, (early) infantile autism, infantile psychosis, Kanner's autism, Kanner's syndrome, or (formerly) just autism, is a neurodevelopmental condition first described by Leo Kanner in 1943. It is characterized by atypical and impaired development in social interaction ...
Autism or autism spectrum disorder[a] (ASD), is a neurodevelopmental disorder characterized by repetitive, restricted, and inflexible patterns of behavior, interests, and activities, as well as persistent deficits in social communication and interaction. Autism generally affects a person's ability to understand and connect with others, as well ...
Brain sections and how autism relates to them. 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]
Tuberous sclerosis. Tuberous sclerosis complex (TSC) is a rare multisystem autosomal dominant genetic disease that causes non-cancerous tumours to grow in the brain and on other vital organs such as the kidneys, heart, liver, eyes, lungs and skin.
The mechanisms of autism are the molecular and cellular processes believed to cause or contribute to the symptoms of autism. Multiple processes are hypothesized to explain different autism spectrum features. These hypotheses include defects in synapse structure and function, [1][2] reduced synaptic plasticity, [3] disrupted neural circuit ...