Though autistic disorder is often thought of as a single condition,
The first type of autism is called Classic Autism. It’s also known as Kanner’s
The second form of autism is referred to as Rett’s Syndrome. This type off autistic disorder is another low-functioning one. Rett’s is exclusive to females and often occurs in conjunction with mental retardation. Rett’s girls are typically impaired in their movements and will rarely communicate verbally. Studies have concluded that Rett’s is passed on genetically, though no hypothesis has yet to be proven regarding the reason that it occurs only in girls when all other types of autism occur in boys 75 percent of the time.
The third kind of autistic disorder is Childhood Disintegrative Disorder. Children with this form of autism often develop normally, or are diagnosed with Classic Autism or Rett’s Syndrome. However, the diagnosis changes with the speech and motor skill problems that accelerate. Regression occurs between the ages of two and four for an unknown reason, though it is suspected that it may be brought about by illness or types of surgery. This hypothesis has yet to be proven.
The fourth form of autistic disorder is Asperger’s Syndrome. It is easy to misdiagnose children with this disorder as they generally have better social and communication skills than other autistic children, but they still face limitations. It typically isn’t until these children begin school that these limitations start to become obvious. Children with Asperger’s often do very well with behavioral treatments and are able to exist quite well within a normal lifestyle when they begin these therapies as early as possible.
The last form of autistic disorder is also the most vague. It is called PDD-NOS (Pervasive Developmental
Part of the understanding of
For some autistic people and relatives of those on the