Getting a denial letter is hard, but it is not the end. You have exactly 60...

https://bizzmarkblog.com/how-do-i-explain-brain-fog-and-medication-side-effects-to-the-ssa/

Getting a denial letter is hard, but it is not the end. You have exactly 60 days to file your appeal. Start by submitting the SSA-561 form for Reconsideration. Don’t just list your medical diagnoses