An accurate answer depends on the terms of your student loans, especially the extent of federal government involvement. For those loans there is a program of loan forgiveness in cases of disability. The cooperation of your treating physician is essential to the documentation. A great deal of information is available online. This website appears helpful: http://studentaid.ed.gov/repay-loans/forgiveness-cancellation
Best wishes for a favorable outcome, and please remember to designate a best answer.
This answer is offered as a public service for general information only and may not be relied upon as legal advice.