I have a low thyroid, hypothyroidism, and take synthroid everyday. I am 66 and on Medicare and get social security. I read on the internet that having Hypothyroidism with all the symptoms that I actually have that I could get SSD or SSDI, I m not sure what the difference is. Is that true that I could get Social Security Disability payments? I seem to have a very strong memory fog, it s more like short term memory loss. Also weight gain I can t lose, and I get hot and cold. I know I can t handle working because I can t even handle keeping my house clean anymore. Please tell me if and how I can apply .