Thank you very much-trying to learn how to navigate this site.
You can click on their name, and view the poster's profile.
There, you can leave them a note or see by their postings if they're still currently using the board. Those who are still using the board - you probably would have good luck getting a response from through a note.
You can also post a new post on this forum, describing your son's symptoms and get help that way.
Best wishes.