Autism may begin in childhood, but it really does not have any cure.
Sometimes the symptoms of the disorder improve with the passage of time, but in several cases, the sufferer never fully gains control of their capacities.
As a matter of fact, autism has been known to persist in its full-blown state all the way into adulthood and beyond without any kind of improvement.
Autism is a devastating disease on both the sufferer and their loved ones.
Because it is so hard to even tell what an autistic patient is feeling, you the caregiver may try to take their suffering upon yourself and attempt to deal with it.
This hardly works, I must tell you; and you really should not make a habit of it, otherwise you could hurt yourself and the patient in a significant way.
Instead what you want to do is to pay attention and learn the ways by which you will be able to handle autism in your adult sibling or child.
Adults that suffer from autism retain several of the symptoms of the disease from their childhood suffering.
They still have social and communication difficulties, as well as their restrictive interests and their repetitive behaviors.
They may still have that sensory sensitivity that you could not stand when they were younger, their savant skills, and the occasional physical symptoms that accompany the syndrome like belly pain, constipation, or diarrhea.
These symptoms, as earlier stated may or may not have improved, but they are likely to remain for life.
If you are living with such a person, you are going to have to learn to live with it and find ways to work around it.