sharon...keep in mind that folks about your dad's age also experience what is refered to as Age-Associated Memory Impairment. the things you mentioned could all fall in this category, and occur frequently with old age. now, this can be compared to dementia (Alzheimer's disease being one of about 80 or so dementias). dementia is progressive; AAMI is not. people with dementia get worse with time not better. people with AAMI can compensate for their memory problems with a variety of aids...calendars, post-it notes, etc. also, AAMI is often the result of a stressful situation....death of a spouce, for instance. if the diagnosis of PD was recent, that could be contributing to the memory declines. also, if these memory declines substantially interfere with daily living activities, then i might be more inclined to suspect dementia. however, the exact diagnosis of dementia (especially Alzheimer type dementia) is frequently a process of elimination... that is, is the memory decline due to depression, or stroke.....it could also be due to vitaming b-12 deficiency.....among other causes of memory decline that can mimick dementia. if these problems persist, and the get worse...i would consult a neurologist...not a general practicioner... i work with the elderly, as well as AD and PD individuals.... memory impairment and decline is a very big concern among older adults.... frequently they automatically assume it is AD....when most times it may simply be AAMI. also, PD can result in mild memory impairment, along with the other things associated with. also, since your dad is taking PD medication, be aware that too many medications (or the mixing of several meds) can also cause AAMI...... ric ferraro, ph.d. dept. psychology univ. north dakota