"Therapists have suggested that my son has ADHD, but he's too embarrassed to see a psychiatrist. How can I get him to reconsider?"
Larry Silver, M.D.
Since your son is now an adult, you cannot force him to get help. You might try asking his advisor at college, or a teacher he liked in high school, to sit down with him and explain why they think he has ADHD. Or send him a book or an article about ADHD and the effectiveness of treatment, possibly highlighting passages that you think describe him.
Once he's convinced that he really does have a problem, and that treatment is available, he might be willing to get help.