What is dementia with Lewy bodies?
Dementia with Lewy bodies (DLB) is a progressive condition that affects the brain. It can change how a person thinks, moves, sleeps, and behaves over time.
DLB is caused by the buildup of Lewy body proteins in the brain. These protein changes affect important brain chemicals that help control movement, memory, and behavior. Aging is the biggest known risk factor, and some people may have a family history of related neurological conditions.
Symptoms
Symptoms of DLB can vary from person to person and may change from day to day. Some people notice problems with thinking first, while others develop movement or sleep changes early on.
Common symptoms include:
- Trouble concentrating or staying alert
- Memory and thinking problems
- Visual hallucinations
- Slow movement or muscle stiffness
- Shuffling walk or balance problems
- Tremors
- Vivid dreams with movement during sleep
- Depression or anxiety
- Dizziness or fainting
- Changes in bladder or bowel control
How is it diagnosed?
Diagnosing DLB usually involves a combination of exams and testing. Healthcare providers look at symptoms, medical history, and changes in thinking or movement.
Testing may include:
- Memory and cognitive assessments
- Neurological examination
- Blood tests to rule out other conditions
- Brain imaging such as MRI, CT, or PET scans
- Sleep or brain activity studies in some cases
Because DLB shares symptoms with other neurological disorders, careful evaluation is important for an accurate diagnosis.
How is it treated?
There is currently no cure for DLB, but treatment can help manage symptoms and improve daily life.
Care plans may include:
- Medicines to support memory, movement, mood, or sleep
- Physical therapy to improve strength and balance
- Occupational therapy for safety and daily activities
- Counseling and emotional support
- Structured daily routines and home safety changes
As the condition progresses, care needs often change. Ongoing medical support and caregiver involvement can help people maintain comfort and independence as long as possible.
