Catatonia is a later complication of autistic spectrum disorders, which adds considerably to the burden of caring. More research is needed to identify causes, neuropathology, and early signs of vulnerability.

Even low normal vitamin B12 levels can result in neuropsychiatric abnormalities20; therefore, consideration should be given to supplementing a patient's level to at least 600 pg/ml. It would be interesting to determine vitamin B12 levels in all patients with catatonia to assess the frequency of such an association.

The Asperger's (AS) child may have a powerful predisposition to inertia especially when he is stressed or tired. This profound lack of energy or ability to initiate action is seen in the child's school, home, and social life.

I think for autistic people it (inertia) means that they find it hard to do some things, not because of laziness, but because of their disability to change their thoughts and starting doing something differently.

This article and presentation are geared partly at inertial people trying to figure out how to structure their lives in a way that works.

(Autistic) unwillingness to deviate from routine procedures, inability to distinguish essential facts from details, which seem insignificant for a normal individual, are correlated with the mechanism to formalize the notion of inertia and monotonicity.