What is the name of your state (Florida)? I applied and was denied ssi for my son in 2010 I regretfully gave up when I should have appealed my son is now remarkably worse additional diagnoses on top of original. In my opinion they all caused and meshed together from one as its developmental delays, speech impairment, and now adhd, bipolar. Can I get backpay for him even though they are considered two different applications due to the length of time between