1. Genetic factors: Atypical autism is more likely to occur in individuals with a family history of autism or other developmental disorders.
2. Environmental factors: Exposure to certain environmental toxins, such as lead, during pregnancy or early childhood may increase the risk of developing atypical autism.
3. Medical conditions: Certain medical conditions, such as fragile X syndrome, tuberous sclerosis, and Rett syndrome, are associated with an increased risk of atypical autism.
4. Premature birth: Babies born prematurely are more likely to develop atypical autism than those born at full term.
5. Low birth weight: Babies born with a low birth weight are more likely to develop atypical autism than those born at a normal weight.
6. Gender: Boys are more likely to develop atypical