Dementia Symptoms: Hearing This Sound Is a Warning Sign of Brain Decline

The Alzheimer's Society says that auditory hallucinations like knocking or footsteps can be an early indicator of Lewy body dementia, reports the Daily Express . Visual hallucinations, which often take the form of people or animals, are also a common early warning symptom. "They can last several minutes and may be distressing," the society warns. A 2019 study in Alzheimer's & Dementia: The Journal of the Alzheimer's Association also demonstrated that people with Alzheimer's disease or Lewy body dementia exhibit unique walking patterns that signal subtle distinctions between the two conditions. Those with Lewy body dementia change their walking steps more and have an asymmetric gait compared to those with Alzheimer's disease.