Dementia is a progressive decline in thinking, memory, and the ability to learn. People with dementia need help with basic activities, such as cooking and bathing. Most also eventually need around-the-clock supervision from caregivers. Dementia has no cure, but providing support to caregivers helps. With caregiver support, symptoms of dementia can be improved. Support can also delay the caregiver's need to send the person they are helping to a nursing home. However, proper support requires multiple health care and social services.