I would say the depression, those symptoms go hand in hand, mistaken for ADD.
I have ADD, and AD's never addressed that, the forgetfulness was from depression and possible some meds that they tried.
ADD med is different than the SSRI's (AD's) you mentioned, and I'm quite sure the neurotransmitters affected by the SSRI's are not the ones that ADD meds (many stimulants) work on.
I'm glad the meds have helped.
Take care now,
DE