All are cognitive domains except

A. Multiple sclerosis (MS) is a disabling disease of the central nervous system (brain and spinal cord). It involves the immune system attacking the protective myelin sheath covering nerve fibers, causing communication problems between the brain and the rest of the body. This progressive damage can lead to both physical and cognitive disabilities, making it a dementia-related disorder in some advanced cases.
B. Huntington chorea (Huntington’s disease) is a genetic neurodegenerative disorder that affects movement and cognitive function, but it is not primarily defined as a disorder of both the brain and spinal cord.
C. Wernicke-Korsakoff syndrome is a brain disorder linked to chronic alcohol use and thiamine (vitamin B1) deficiency. It affects memory and coordination but is not a disease of the spinal cord.
D. Alzheimer’s disease is the most common form of dementia and is strictly a brain disorder, not one that affects the spinal cord.

A. Denial is a common defense mechanism in patients with Alzheimer's disease. Individuals may refuse to accept the reality of their cognitive decline, which can lead them to deny their condition or deny symptoms, such as memory loss.
B. Confabulation refers to the unintentional creation of false memories to fill in memory gaps. It is a defense mechanism often seen in Alzheimer's patients as they attempt to make sense of their experiences or answer questions when they do not remember the correct information.
C. Perseveration is the repetition of a word, phrase, or action. Patients with Alzheimer's may exhibit perseveration when they become fixated on a thought or action and repeat it persistently, which is often a coping mechanism for confusion or disorientation.
D. Rationalization is a defense mechanism where individuals justify or explain their behaviors in a seemingly logical way to avoid feelings of guilt or discomfort. While it can be seen in many types of psychological distress, rationalization is not typically a behavior associated with Alzheimer's disease. Instead, Alzheimer's patients are more likely to demonstrate denial, confabulation, or perseveration, as they struggle with cognitive decline and memory loss.