No. In fact, many Social Security attorneys will not take on a case until the person has applied for themselves and faced at least one rejection. There are exceptions. You can electronically apply for Social Security Benefits through the www.ssa.gov website. If you require assistance with the application, you can contact your local Social Security office and they will help you.
Though you do not need one, an attorney can be helpful asset for winning your case. The Social Security Administration is a government agency where bureaucracy and red tape are common. Representation that is experienced with that bureaucracy, who can advocate on your behalf if you can’t advocate for yourself, can help you get approved for SSDI.