Unlike the cognitive decline caused by Alzheimer's, which is both chronic and progressive, the psychological problems that spring from the disease tend to fluctuate, coming and going depending on the person's mental and emotional state. Psychotherapy following initial diagnosis can help someone deal with feelings of anxiety or anger caused by the disorder, as well as behavioral problems like delusions that can accompany Alzheimer's. Talking to a therapist can also be helpful as someone struggles to come to terms with, and accept, their (or their loved one's) new diagnosis. As Alzheimer's progresses, psychotherapy may become more challenging for the patient as cognitive decline occurs and the ability to express feelings is lost. Yet, family and caregivers can continue to benefit from working with a mental health professional as the disease progresses.