<s>[INST]I have memory issues. What is mild scattered periventricular an dsubcortical T2 intense white matter foci? I have quite a few migraines. I was prescribed Exelon 4.6 mg patch. I was 48 at the time of starting medication. Parent had mental issues but, have no idea what they were. Presently my memory issues are coming back. Recently started a job and was unable to remember from day to day how to utilize computer with instructions.[/INST]Hi, Thank you for posting your query. Your memory loss needs to be evaluated. Detailed neuropsychological assessment would confirm or exclude whether you have dementia. Exelon (rivastigmine) is a medicine used for treating dementia due to Alzheimer's disease (AD). So, I would wait before starting Evelyn patch and start it only if you have AD.MRI brain findings in your case are non-specific and are most likely due to your past migraine. I hope my answer helps. Please get back if you have any follow-up queries or if you require any additional information. Wishing you good health, Chat Doctor. Ly/</s>