Yes

If word finding issues are new to you since your head injury, it's troubling when you really can't come up with something that you know, "you should know." I am like this with words, facts I know I knew, etc. I then get stuck until I figure it out.

I've found if it's in conversation, I will explain the concept of the world I'm trying to come up with, and allow people to offer suggestions until I come up with the right word. For example if I can't find the word "dog", I will say something like, "you know it's furry, has four legs, people have them as pets... etc." If not, I would be stuck for hours trying to find it.

When it comes to facts, my go to is my google app on my phone. Because again, it will bother me and my mind will obsess until I figure it out. This could take hours, and lots of brain energy.

But yes, it's normal