DEAR DR. ROACH: My mother was diagnosed with Alzheimer's disease in 2009, and she is taking Namenda and Aricept to help slow the advancement of the disease. I am writing because she complains of being cold all the time. She and my father keep the temperature in their house at 80 degrees, and my mother wears winter clothes, a coat and a blanket in the house. She sometimes sweats through the clothes, but we can't persuade her to remove any layers. The house is uncomfortably hot for anyone else, and yet she says she is cold.