My husband is having mental confusion, severe chills, fatigue, and feels like he is moving slowly. He is diabetic (type2). He is on 5mg of donepezil and 14mg of Namenda for the confusion and memory loss. He is so cold most of the time (chest, arms and legs) or at times, has heavy sweating. Blood work isn t showing any reason for these crazy symptoms. Any ideas? email is YYYY@YYYY . Thank you.