Which of the following are mood change symptoms commonly seen in Alzheimer's disease?

• A. Anger
• B. Apathy
• C. Loneliness
• D. All of the above

Answer: (D)

In Alzheimer's disease, mood and behavioral changes are common features, reflecting neuropsychiatric symptoms that accompany dementia. Anger or irritability can arise from confusion and communication difficulties, leading to episodes of agitation. Apathy—loss of motivation and diminished interest in activities—is particularly prevalent and can be mistaken for simple disengagement or depression. Loneliness often arises as patients withdraw from social interaction due to memory problems and changing social cues, contributing to a feeling of isolation. Since each of these mood-related changes can occur, the option that includes all of them is the best answer.