Experts report that as people age, dementia and depression are both common conditions and may be confused with one another. Additionally, one may lead to the other as depression is linked to a higher risk for dementia, and dementia can cause depression. The Harvard Medical School explains depression in the elderly can lead to a “phenomenon called pseudodementia—an apparent intellectual decline that stems from a lack of energy or effort.” They say individuals with this problem are often forgetful, move slowly, exhibit low motivation and signs of slowing mental prowess. If a loved one experiences these types of symptoms, their doctor may treat it with the same medications used to treat depression. As the person’s mood improves, they typically begin to function at their previous level. Professionals share a few ways depression and dementia differ to help families and healthcare providers determine what is going on. One important difference is the time span of the decline. A person with d...