I have PTSD from the events of my cancer diagnosis and treatment (I'm currently cancer-free, yay) and I have some cognitive impairment and memory loss from chemo, head/neck radiation, and the effects of PTSD. While I've noticed occasional improvements, I still have large gaps in my memory and there are several types of information I have trouble absorbing. Some things, though, are little. This used to happen a lot more often, but sometimes I'll try to think of a word and I'll remember the sound and the idea of what it means, but the actual word and its precise definition are gone. Other variations like that, but normally they're adjectives or nouns for specific theoretical contexts; honors English vocab stuff. Anyway, I have a similar feeling about a different situation: I was at the beach thinking about seaglass, but I couldn't remember what it was called. I thought "sea glass" almost right away, but I thought there was another word for it that I had forgotten. I know now that that *is* the right word, but I can't shake the feeling that I've lost the "real" word for it. Have other people with PTSD or chemo brain had this sensation of missing a word or memory that was never actually there?