Hello @maradnabil and welcome to Mayo Clinic Connect. You are asking a good question. As you have posted in the Care Givers support group, I'm wondering if you have a loved one who has Parkinson's.

I would encourage you also to post this question in the Parkinson's support group. Here is the link, https://connect.mayoclinic.org/group/parkinsons-disease/

Here you will find other PD patients and caregivers who are dealing with Parkinson's, such as @sillyblone and @tower, among others.

As PD is a brain disorder, there can be cognitive disorders, and memory problems are certainly part of that. I would enjoy hearing from you again. As this is your first post, share a bit about your experience with PD. For example, how long ago was PD diagnosed? What other symptoms are bothersome?