my son has mental disorders, he can't hold down a job due to his mental state. Is there anything that can be done for this ?

Yes, depending on your Sons age, work history and current income will determine whether he may qualify for SSI, SSDi or Both.  It is also very important that he also has the proper medical diagnosis, documentation to support his current disability(s) at the time he completes an application.   Feel free to reach out to our office at 855-254-7841 if you have additional questions.