Are there any tax breaks for caregiving of a spouse with Alzheimer's?

Are there any tax breaks for care giving of a spouse with Alzheimers.  He can no longer work; he was 65 when he had to quit work; is 66 now. He does receive SS part A & B. He attends Day Care 6 times a month (which I* pay for) and he has a Life Alert system. I also have an FSA account through my work which he uses for prescriptions and doctor appointments. My 97 yr old mother also lives with us. I handle our finances, my mother's and my mother-in-laws, who is in a nursing home.