Sorry to hear about your son- do they know what is causing it?
You can check my blog for resources that may help there is a lot of information I feel you can use , let me know if I can help you more.
I have a friend who is older and she had parathroid disease and she was able to get surgery as it was robbing her bones of calcium.
good luck and there are two work from home jobs listed free to join in my blog tmi and dental
have you tried calling 211 or visit 211.org, more is listed in my blog
Good luck to you and your son!