Dementia encompasses a range of conditions leading to progressive brain decline and memory loss, with Alzheimer’s disease being the most common form. Alzheimer’s typically manifests through memory loss and declining cognitive function, disrupting daily activities. While there is currently no cure, early detection can slow its progression, aiding patients and families in maintaining a higher quality of life for longer periods.
Contrary to common belief associating memory issues with Alzheimer’s, a 2017 review suggests that depression could actually be an early warning sign. Researchers analyzed medical literature from 1937 to 2016 to identify symptoms preceding an Alzheimer’s diagnosis.
Their study found that depression and cognitive decline were the initial symptoms in a high percentage of participants, both in late-onset and early-onset Alzheimer’s cases. Memory problems appeared about 12 years before a clinical diagnosis of advanced Alzheimer’s, indicating that neurological and depressive behaviors may occur early on.
Identifying depression, especially when it presents as a symptom of Alzheimer’s or dementia, can be challenging. The Alzheimer’s Association notes that depression and dementia share some common symptoms, but the cognitive impairment in Alzheimer’s patients may hinder their ability to express feelings associated with depression.
The association emphasizes that depression in Alzheimer’s patients may not always resemble typical depression, as it can be less severe and episodic rather than persistent. Additionally, individuals with Alzheimer’s are less likely to communicate suicidal thoughts compared to those solely experiencing depression.