Welcome to the forum. I'm sorry to read you're worried about the driving appraisal; hopefully the suggestions below will help.
We have a very active thread on this forum about DVLA licence issues. You can find it here: https://www.parkinsons.org.uk/forum/thread/71397 You might find it useful to read about other people's experiences.
Please do feel free to give our helpline a ring on 0808 800 0303, if you'd like to speak to one of our trained advisers. The helpline is open Monday-Friday: 9am-7pm & Saturday: 10am-2pm).
You could also get in touch with the DVLA and ask them to tell you more about the appraisal. For DVLA enquiries regarding a medical condition you can contact the Drivers Medical Group via 0300 790 6806 (Monday-Friday: 8am-5.30pm and Saturday: 8am–1pm).
Ilona (Moderation Team).