To start with, while an adult in your life may, in fact, be diagnosable with Asperger syndrome it's not absolutely necessary to get an "official" diagnosis. That's because (1) it's hard to find a specialist with experience in diagnosing adults with Asperger syndrome and (2) there is no particular treatment for Asperger syndrome in adults.
Generally speaking, adults with autism receive treatment for specific symptoms through a combination of cognitive (talk) therapy, direct instruction for particular social situations, and appropriate medications. They may also choose to seek help from an occupational therapist for sensory problems: Many people on the autism spectrum over or under-react to sound, light, pain, and so forth.
The most effective course to follow for your adult child is:
- Seek out a psychiatrist who can work with him on his social anxieties and shyness (in some areas it may be possible to find a psychiatrist with experience working with adults on the autism spectrum, but it's not absolutely critical);
- Consider any medications the psychiatrist may recommend;
- Consider using videos, books and other tools that provide direct instruction in handling problem situations at work or in the community;
- Consider connecting with online support groups for adults with Aspergers and related disorders.
