Memory loss, confusion, difficulty concentrating, and changes in behavior can be concerning, especially when they occur in an older adult. While these symptoms can be associated with dementia, some illnesses and health conditions can cause dementia-like symptoms without being dementia itself.
Understanding the possible causes of these changes is important. Some conditions may be treatable, and identifying the underlying cause can help families and healthcare professionals determine the appropriate next steps.
What Does It Mean When an Illness Mimics Dementia?
Dementia is a general term used to describe problems with memory, thinking, reasoning, communication, and other cognitive abilities that interfere with everyday life. Dementia has several possible causes, including Alzheimer’s disease and other neurological conditions.
However, memory problems and confusion can also occur because of other medical conditions, medication effects, nutritional deficiencies, sleep problems, infections, and mental health conditions.
This is why a new or worsening change in memory or thinking should not automatically be assumed to be dementia.
Illnesses and Conditions That Can Cause Dementia-Like Symptoms
Several conditions can produce symptoms that may look similar to dementia. Some common examples include:
1. Infections
Infections can sometimes cause sudden confusion or changes in thinking, particularly in older adults. A person who becomes noticeably confused or disoriented during an illness may need prompt medical evaluation.
In some situations, confusion may improve when the underlying infection is treated.
2. Depression and Anxiety
Depression can affect concentration, memory, motivation, and the ability to complete everyday activities. In older adults, depression may sometimes look like cognitive decline.
Anxiety and prolonged stress can also make it more difficult to concentrate or remember information.
Because depression and dementia can have overlapping symptoms, a healthcare professional can help determine what may be contributing to the changes.
3. Vitamin B12 Deficiency
Vitamin B12 plays an important role in normal nerve and blood-cell function. Low levels of vitamin B12 can contribute to memory and thinking problems in some people.
If a healthcare professional suspects a nutritional deficiency, blood testing may be used to investigate the cause.
4. Thyroid Problems
Thyroid disorders can affect many aspects of health, including energy, mood, concentration, and memory.
An underactive thyroid, known as hypothyroidism, can cause forgetfulness and other symptoms that may resemble cognitive decline.
A healthcare professional can evaluate thyroid function as part of an assessment when appropriate.
5. Medication Side Effects
Some medications can cause confusion, drowsiness, difficulty concentrating, or memory problems. Taking several medications at the same time can also increase the possibility of medication-related cognitive effects.
Older adults and their families should not stop prescribed medications on their own. Instead, talk with a healthcare professional or pharmacist about whether medications could be contributing to changes in memory or thinking.
6. Dehydration and Nutritional Problems
Not getting enough fluids or adequate nutrition can affect how a person feels and functions. Dehydration may contribute to confusion, particularly in older adults.
Poor nutrition can also contribute to deficiencies that affect cognitive function.
Maintaining adequate hydration and a balanced diet is an important part of overall senior wellness, although ongoing confusion should always be discussed with a healthcare professional.
7. Sleep Problems
Poor sleep can affect attention, concentration, mood, and memory. Conditions such as sleep apnea can interfere with restorative sleep and may contribute to daytime cognitive difficulties.
If an older adult regularly has difficulty sleeping, snores heavily, or appears unusually tired during the day, discussing these symptoms with a healthcare professional may be helpful.
8. Head Injuries
A fall or other head injury can sometimes lead to memory problems or changes in thinking. In older adults, even a seemingly minor injury deserves attention when new confusion, headaches, balance problems, or changes in behavior occur afterward.
A healthcare professional can determine whether further evaluation is necessary.
9. Delirium
Delirium can look similar to dementia but is generally characterized by a sudden change in attention and mental status.
A person experiencing delirium may become confused, disoriented, unusually sleepy, agitated, or have changes in behavior. Delirium can be associated with an underlying medical problem, infection, medication effect, or other health issue.
A sudden change in mental status should be taken seriously and evaluated promptly.
10. Other Neurological or Medical Conditions
Other conditions can sometimes cause symptoms that resemble dementia, including certain neurological disorders, metabolic problems, problems involving the liver or kidneys, brain tumors, normal-pressure hydrocephalus, and other medical conditions.
Because there are many possible causes, professional evaluation is important when cognitive changes appear.
How Are Dementia-Like Symptoms Evaluated?
When an older adult experiences new memory loss or confusion, a healthcare professional may review:
- Medical history
- Current medications and supplements
- Recent illnesses or infections
- Sleep patterns
- Nutrition and hydration
- Mood and mental health
- Memory and thinking abilities
- Physical and neurological symptoms
- Blood tests or other diagnostic testing when appropriate
A family member or caregiver can also provide useful information about changes they have noticed in the person’s everyday behavior.
The goal is to determine what may be causing the symptoms rather than assuming that every memory problem is dementia.
The National Institute on Aging provides additional information about memory problems, forgetfulness, and when older adults should talk with a doctor.
When Should Families Seek Medical Help?
Families should consider contacting a healthcare professional when memory or thinking changes are:
- New or noticeably different
- Becoming more frequent
- Interfering with everyday activities
- Affecting medication management or appointments
- Associated with changes in mood or behavior
- Occurring after a fall or head injury
- Accompanied by significant confusion or disorientation
Sudden confusion or a sudden major change in mental status requires prompt medical attention, because it can sometimes signal an acute medical problem.
How Families Can Support a Loved One
While the underlying cause is being evaluated, families can provide practical support at home.
Helpful steps may include keeping important information organized, maintaining a familiar daily routine, encouraging appropriate hydration and nutrition, helping with appointments, and making the home environment safe and comfortable.
It can also help to keep track of changes in memory, mood, sleep, behavior, or daily functioning. This information can give healthcare professionals a clearer picture of what has changed and when it began.
For families who need additional help at home, non-medical in-home care can provide support with everyday activities and companionship.
How Comfort Home Healthcare Can Help
At Comfort Home Healthcare, we understand that families may need additional support when an older loved one is experiencing changes in memory or daily functioning.
Our caregivers provide compassionate in-home care in Denver and surrounding Colorado communities, helping seniors with everyday needs such as personal care, companionship, meal preparation, light housekeeping, mobility assistance, and medication reminders.
Our caregivers do not diagnose or treat medical conditions. Instead, we provide supportive care at home while families work with their healthcare professionals to address their loved one’s medical needs.
If your family is looking for compassionate support for a senior loved one, contact Comfort Home Healthcare at (303) 324-6962 to learn more about our in-home care services.