It is possible for ADHD to affect memory in some individuals, especially when it comes to working memory, which is the ability to hold and manipulate information in the short-term. However, ADHD itself does not typically cause memory loss.
It is important to note that memory problems can have various causes, including other medical conditions, medication side effects, and lifestyle factors. If you are experiencing memory problems, it's important to speak with a healthcare professional or mental health provider to receive an accurate diagnosis and appropriate treatment.