Dr. Sylvester Ikhisemojie discusses dementia, a broad term that encompasses a range of conditions affecting the brain, particularly in advanced age. Symptoms of dementia include difficulties with judgment, language, problem-solving, and memory. As people live longer, dementia has become an increasingly prevalent issue worldwide, particularly among those over the age of 60. While it is not a normal part of aging and cannot be guaranteed to be prevented, early detection and treatment can help slow its progression. The World Health Organization estimates that dementia affects between five to eight percent of individuals aged 60 and older, indicating that it is a more common problem than many realize.
Dementia refers to a variety of degenerative diseases of the nervous system, characterized by significant cognitive decline. Alongside cognitive symptoms, individuals may experience changes in mood and behavior. The condition is typically progressive, with symptoms starting off mild and becoming more severe over time, often going unnoticed initially by those around the affected person. Various brain injuries and diseases can lead to different types of dementia, each with distinct effects on the brain. The most common type is Alzheimer’s disease, which accounts for more than two-thirds of all cases. In Alzheimer’s, nerve tissue in the brain contains protein deposits known as plaques and tangles, which damage cells and lead to cell death.
Another variant is frontotemporal dementia, where damage occurs in the front and sides of the brain due to protein aggregation within brain cells. Vascular dementia results from inadequate blood flow to the brain, often caused by strokes or damaged blood vessels, leading to brain cell damage. Lewy bodies dementia is characterized by the deposition of protein substances that disrupt normal brain cell function and contribute to cell death. Less commonly, conditions such as HIV/AIDS, Parkinson’s disease, and Creutzfeldt-Jakob disease can also cause dementia. Traumatic brain injuries from accidents or contact sports, particularly boxing, may also contribute to the development of dementia.
In the early stages of dementia, individuals may struggle to remember simple details, such as what they had for breakfast or events from the previous day. One of the initial signs is often difficulty following conversations, which may lead them to veer off-topic or substitute words incorrectly, making communication challenging. This impairment can also affect their writing, rendering it difficult to understand. Additionally, individuals may experience spatial awareness issues, leading to accidents such as bumping into objects or misjudging distances, which increases their risk of falls. They may also struggle with routine tasks, such as remembering the order of getting dressed or the steps involved in cooking familiar meals.
As dementia progresses to the middle stage, communication difficulties become more pronounced, and individuals may require increased assistance with daily activities. Behavioral changes may occur, including increased aggression and repetitive questioning. Forgetfulness can escalate to the point where individuals may become lost even in familiar surroundings. Notable cases illustrate this, such as a 76-year-old American who drove over 300 kilometers in the wrong direction and a healthcare colleague whose father, at 73, wandered off and was found four days later in a different city. At this stage, individuals require closer monitoring to ensure their safety, as they are particularly vulnerable to exploitation and crime.
Diagnosing dementia involves a comprehensive physical examination by a doctor to rule out other potential causes of symptoms. Additional tests, including blood tests and cognitive assessments, evaluate memory and thinking abilities. Imaging scans, such as CT or MRI, may also be conducted to identify any underlying brain conditions that could contribute to dementia. Treatment for dementia is complex and time-consuming, as there is currently no cure. The primary goal is to increase levels of acetylcholine, a neurotransmitter crucial for memory and judgment. Although only a limited number of medications are approved for treatment, they are not universally available. It is essential to understand that dementia is a progressive disease, and while treating underlying causes like strokes may positively impact its progression, no definitive cure exists.
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