Lewy Body Dementia (LBD) is a progressive brain disorder that affects memory, movement, behavior, and mood. It’s caused by abnormal protein deposits—called Lewy bodies—that interfere with brain function. LBD is the second most common type of dementia after Alzheimer’s disease.

How LBD Progress

In the early stages of LBD, sometimes before a diagnosis is made, symptoms can be mild and have less impact on daily functioning. As the disease worsens, people with LBD require more help with daily activities due to a decline in thinking and movement abilities. In the later stages of the disease, people may depend entirely on others for assistance and care.

LBD is a progressive disease, meaning symptoms start slowly and worsen over time. The disease lasts an average of five to seven years from the time of diagnosis to death, but it can range from two to 20 years. How quickly symptoms develop and change varies greatly from person to person because it depends on overall health, age, and severity of the condition. Typically, LBD may impact those age 50 or older, although sometimes younger people may have it, and appears to affect slightly more men than women.

Some LBD symptoms may respond to treatment, though responses vary. Currently, there is no cure for the disease. Key Signs and Symptoms

Cognitive Changes

• Trouble with memory, attention, and problem-solving
• Confusion that comes and goes

Visual Hallucinations

• Seeing things that aren’t there—often one of the earliest symptoms

Movement Difficulties

• Stiffness, tremors, and slow movement (similar to Parkinson’s disease)

Sleep Disturbances

• Acting out dreams or sudden movements during sleep (REM sleep behavior disorder)

Mood and Behavior Changes

• Depression, anxiety, or lack of interest in daily activities

Diagnosis and Treatment

• Lewy Body Dementia is often hard to diagnose because its early symptoms may resemble those of Alzheimer’s or a psychiatric illness. As a result, it is often misdiagnosed or missed altogether. As additional symptoms appear, it is often easier to make an accurate diagnosis.

How It’s Diagnosed

• Medical history and symptom review
• Brain imaging
• Sleep studies (in some cases)
• Neuropsychological testing

Treatment Options

• Medications for movement, mood, and hallucinations
• Therapies like physical, occupational, and speech therapy
• Supportive care for both patients and caregivers

Final Thoughts

If you or someone you love is showing signs of Lewy Body Dementia, early diagnosis and support can make a big difference. Talk to a healthcare provider and explore resources to help manage the journey ahead.