Yes..... That can be part of it... Unfortunately hallucinations, delusions, and paranoia as well..Parkinson's demetia can also occur....He may NEVER experience those, but some with PD will...Each person has their own "blueprint" going through the disease. Talk to his doctor about the sympton he is experiencing... There are things that can help .... Take care of him and yourself !!!!!

Remember you need to take care of you also.

Symptoms come and symptoms go, Ive had most of the symptoms in the over 23yrs since I've been diagnosed. Some of the symptoms stay awhile and some come and go. This disease is ever changing, never the same for everyone.

I don’t know the cause but I can forget what I am saying before I get to the end of a sentence.

Don't feel bad about seeming hysterical. At the moment we all feel that way. I always say to myself this too shall pass. And it does. Just take one day at a time one hour at a time one minute at a time.hugs