I havent actual drawn my SS like you speak of, BUT my Mom did go & attempt to apply after my DX. Unfortuately since my Mom gets rattled easily & got pissed off/upset/whatever, she walked out of the interview & never finished the application process so when I filed for my disability it was all based on my own work history. Secondly I did received survivor benefits from when my Dad died. He was collecting retirement ss when he died & I was entitled to dependant child coverage until I was 19 if I stayed in school. My Mom seriously asked me to fail my Junior year so we would get another year of SS. I refused to & she would deny it now, but she did! Third of all my daughter does collect a portion of my ss disability now. She is entitled to that until she is 16 & if I pass away before she is 16, she continues to get it & my husband gets a portion for caretaker of her until she is 16! I know it doesnt exactly answer your ??, but there have been people (I dont know any CFers tho people with other illness...mainly CP) who collect under their parents!