I AM AN 83 YR. OLD WOMAN...I WAS DIAGNOSED A

I AM AN 83 YR. OLD WOMAN...I WAS DIAGNOSED A YEAR AND A HALF AGO WITH PARKINSONS ...I HAVE NO TREMORS ..SLIGHT BALANCING PROBLEMS...SOME MEMORY LOSS...MY MOTHER DIED WITH ALZHEIMERS DISEASE AT 88....IS THERE ANY GENETIC CONNECTIONS ETWEEN THESE TWO DISEASES...I WAS HER CARETAKER AND IT WAS A HORRIBLE THING TO WATCH,AND I'm FRIGHTENED THAT I MIGHT BE AT RISK FOR aLZEIMERS...IS THIS POSSIBLE? PLEASE LET ME KNOW...THANK YOU...PAT BOCK