Have you had any cognitive side effects from chemo?

I just wanted to hear if a lot of people have had what I believe is brain fog. My brain fog and dissociation is crippling and I feel like I’ve heard about it a bit but there’s not nearly enough information about it.

I’m 12 years post treatment (got it as a child) so I’m pretty sure it’s not temporary. Always thought it was adhd but it feels like it’s more than that.