Is scoliosis a physical disability?
None of the above.
Autism is a neurological difference that you either are or are
not - how it affects you can be mild, moderate or severe but this
can change throughout your life. Autism is known as Autism Spectrum
Disorder but this assumes that Neurotypical is the norm and Autism
is a fault in a brain that was supposed to be Neurotypical, many
people find this offensive and instead insist it is a variation in
brains (like race is a variation in skin colour and physical
characteristics) not a disorder.
Autism itself also isn't a disability, a person with autism may
be disabled by their autism or by other people's prejudice or lack
of support of their differences, but in itself Autism is not a
disability - not all autistic people are disabled by autism.