You can apply for SSI at any age. You only qualify if you are found to be disabled or blind or over age 65 and have limited income and resources. You can be denied SSI for reasons other than medical conditions.

You should call 1-800-772-1213, make an appointment and file a claim. Then you get an official answer. The answer could be no, but at least you will have an official answer. If you are under age 65, you should also fill out the disability report online at socialsecurity.gov. If you are over 65, no proof of disability is needed for SSI unless you are a certain type of non-citizen. You will need proof of your income and resources and living arrangements as well.

You can also file for "DIB after RIB" by filing an SSDI claim if your onset of disability is before full retirement age, which is age 66. You will need to complete the disability report, preferably online.