My dad is 80. He, over the last year, is exhibiting short-term memory loss, some days, confusion, and in the last month, has lost about 15 lbs. I took him to his MD one week ago to address our concerns. The doctor didn t seem overly concerned about the things we presented with. My dad is on a variety of prescriptions. I do not have a current list. But, he takes warfarin. His heart goes into afib about once a month or so, sometimes more, and is out of rhythm for an average of 10 to 20 hours. He also is supposed to take Lexapro, but he is not consistent and thinks he doesn t need to take it. At his last appt, the doctor asked him to please take the Lexapro once a day, every day as directed, then come back in 6 weeks to see if he still has problems. I m searching for other answers. I m concerned at his weight loss, his dramatic mood swings, and more frequent confusion. I am wondering if he is having mini strokes, but he had a CT scan on Friday because we took him to the ER after he fell at home and split his eyebrow open. CT scan was reported to be normal. I understand that any stroke he may have had would show up on a CT scan. Is that true?