The Onset of Autism: Early Onset vs. Regression
Not all children on the Autism Spectrum exhibit symptoms in early life. The onset of autism is actually usually described in two patterns: early onset autism and regressive (late onset) autism.
While signs and symptoms of early onset of autism can be identified typically within the first year of life or so, it is thought that regressive autism can manifest from 24 to 81 months after birth. This pattern of onset is described by typical or mildly delayed development, followed by a regression resulting in loss of speech — at times the loss of all language, and/or becoming socially and emotionally isolated. A “minority of children with Regressive Autism [may also report loss in] motor skills and basic adaptive skills, such as self-feeding and toiletting” (Oslejskova H. et al).
In contrast to regressive (late onset) autism, the earliest signs of early onset autism is characterized by the complete absence of abnormal behaviour. Often leading parents to believe their baby is particularly well-behaved. This absence of abnormal behaviour is usually followed by a regression between the ages of 12 and 24 months rather than the 24 to 81 months seen in late onset autism.
In most cases, it is the loss of language that is most frequently reported aspect of regression by parents. However, if your child has a well-rounded vocabulary for his/her age, you have nothing to worry about. According to Kurita, “94% of children with autism and speech loss had only a single-word speech at the time of regression” (Backer, N.).
People aren’t really sure why regression in autism manifests itself or what causes it. It is considered a puzzling phenomena in the field, with some experts disputing it as “old school” mentality. Regardless, parents should keep an eye out for signs of regression. The implementation of intensive treatment may help stop the underlying damage of behavioural regression; allowing for a better shot at recovery.
If you think your child may be exhibiting signs of regression, do not wait. Diagnosis can take months. The earlier the intensive treatment is implemented, the better the chances at recovery. Terrace Autism Therapy offers free autism therapy consultations. Give us a call at 613.831.1105 ext. 107 to book an appointment, we’re here to help.
References
- Oslejskova H, Dusek L, Makovska Z, Pejcochová J, Autrata R, Slapák I. Complicated relationship between autism with regression and epilepsy. Neuroendocrinol Lett 2008; 29:558–570. [PubMed]
- Backer, N. B. (2015). Retrieved from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4949854/#CIT0010
