Re: memory issues
Okay, this is a very common theme and one which requires a bit of discussion. With respect to your memory, you can relax. There is nothing physically causing the problem.
It's critical to understand that in order for short-term memory to occur, you must be able to attend to the stimulus. This process is often interrupted by cognitive ruminations which impede the ability to naturally attend in such a manner to create memory formation. Health anxiety is generally quite pervasive and often produces vigilance that is distractive in nature.
Realize that active memory can be impeded by distraction and consumption of worries about one's health. It's critical to understand that memory degradation by neurodegenerative disease is, unlike memory interference, quite unique in that one of the hallmark characteristics of such disease is the manifestation of anosognosia, or the inability to perceive that a problem with cognition exists. There are other constitutional signs of neurodegenerative diseases that include dementia which must be present. You make no mention of any such symptoms.
Word substitution is not a sign of dementia at all, but rather a sign of interference.
You can take a breath and relax. There is absolutely nothing here to suggest that you are in any way being affected by a neurological disease of any kind. I would, however, be interested in why you believe that OCD has "robbed" you of years of memory. If you don't mind, please elaborate to whatever extent you feel comfortable in sharing precisely what characteristics led to your diagnosis of OCD.
Your memory will improve if you initiate the habit of mentally pausing before undertaking important tasks to attend to certain actions and thoughts necessary to form working memory, also taking steps to assertively turn off the ruminative thoughts which are interfering with your ability to concentrate on the tasks at hand. You'll be pleasantly surprised by the results.
Best regards,
Rutheford Rane, MD (ret.)
__________________
Best regards and Good Health