I am writing on behalf of my Father. He is 81 years old, and has Parkinson's,. He is very much bothered by the fact that he can't seem to maintain his body temperature properly. One minute, a house that is 74 degrees is so cold he needs 2 sweaters and a blanket to be comfortable, and the next minute he is tossing off the sweaters and wanting the temperature lowered. He does not run a fever, but can't seem to stop the waves of heat and cold that wash over him. Both my parents would be grateful for any explanation and advice on handling this problem. His medication is Sinemet, 30 ml once a day as well as 3 Sinemet CR per day and 4 Parlodel. He is also taking vitamins, an extra iron supplement and extra vitamin E. Any suggestions....