Question: I have been researching Lewy Body Disease and have a few questions.1) Is this disease hereditary2) Does alcoholism play a role in the beginning process of this disease3) What are the initial symptoms of the diseaseAny information you could forward would be greatly appreciated.

Reference:
 Lewy body dementia Lewy body disease DLB Diffuse Lewy body disease Lewy body disease DLB Diffuse Lewy body disease Autosomal dominant diffuse Lewy body disease See More Summary Lewy body dementia is one of the most common forms of progressive dementia. People affected by this condition may experience a variety of symptoms such as changes in alertness and attention; hallucinations; problems with movement and posture; muscle stiffness; confusion; and/or memory loss. Although the exact cause of Lewy body dementia is poorly understood, symptoms are thought to result when clumps of a protein called alpha-synuclein ("Lewy bodies") accumulate in the brain. Lewy body dementia usually occurs sporadically in people with no family history of the condition. Rarely, more than one family member may be affected. There is currently no cure for Lewy body dementia; however, medications may be available to help manage the associated symptoms. [1] [2] [3] Symptoms This table lists symptoms that people with this disease may have. For most diseases, symptoms will vary from person to person. People with the same disease may not have all the symptoms listed. This information comes from a database called the Human Phenotype Ontology (HPO) . The HPO collects information on symptoms that have been described in medical resources. The HPO is updated regularly. Use the HPO ID to access more in-depth information about a symptom. Showing of Medical Terms Other Names Learn More: HPO ID Percent of people who have these symptoms is not available through HPO Autosomal dominant inheritance 0000006 Delusions 0000746 Dementia Dementia, progressive Progressive dementia 0000726 Fluctuations in consciousness 0007159 Lewy bodies 0100315 Parkinsonism 0001300 Visual hallucinations 0002367 Showing of Cause The exact underlying cause of Lewy body dementia is poorly understood. The symptoms of the condition are thought to occur when clumps of a protein called alpha-synuclein accumulate in the regions of the brain involved in thinking, memory and movement. The build-up of these clumps (which are called "Lewy bodies") appears to be associated with a loss of certain neurons (nerve cells ) in the brain that produce two important neurotransmitters (chemicals that act as messengers between brain cells). The neurotransmitter, acetylcholine, is important for memory and learning. The other, dopamine, plays an important role in behavior, cognition, movement, motivation, sleep, and mood. [4] Although Lewy body dementia usually occurs sporadically, more than one family member can rarely be affected. Studies of these families suggest that there may be a genetic component to the condition in some cases. For example, copy number variants or changes ( mutations ) in the SNCA gene have been reported in a few affected families. [5] [6] The APOE epsilon4 allele and mutations in the GBA gene have been associated with an increased risk of Lewy body dementia and the APOE epsilon2 allele with a decreased risk. [5] [7] [2] Inheritance Most cases of Lewy body dementia are not thought to be inherited . The condition generally occurs sporadically in people with no family history of the condition. [4] Rarely, the condition can affect more than one family member. Some of these cases appear to be due to single gene changes ( mutations ) that follow an autosomal dominant pattern of inheritance. Other familial cases do not follow a specific pattern of inheritance and likely have a multifactorial cause (associated with the effects of multiple genes in combination with lifestyle and environmental factors ). [6] [5] Diagnosis Making a diagnosis for a genetic or rare disease can often be challenging. Healthcare professionals typically look at a person's medical history, symptoms, physical exam, and laboratory test results in order to make a diagnosis. The following resources provide information relating to diagnosis and testing for this condition. If you have questions about getting a diagnosis, you should contact a healthcare professional. Testing Resources The Genetic Testing Registry (GTR) provides information about the genetic tests for this condition. The intended audience for the GTR is health care providers and researchers. Patients and consumers with specific questions about a genetic test should contact a health care provider or a genetics professional. Treatment The Lewy Body Dementia Association offers detailed and up-to-date information regarding the treatment and management of Lewy body dementia . Please click on the link to access this resource. Find a Specialist If you need medical advice, you can look for doctors or other healthcare professionals who have experience with this disease. You may find these specialists through advocacy organizations, clinical trials, or articles published in medical journals. You may also want to contact a university or tertiary medical center in your area, because these centers tend to see more complex cases and have the latest technology and treatments. If you can't find a specialist in your local area, try contacting national or international specialists. They may be able to refer you to someone they know through conferences or research efforts. Some specialists may be willing to consult with you or your local doctors over the phone or by email if you can't travel to them for care. You can find more tips in our guide, How to Find a Disease Specialist. We also encourage you to explore the rest of this page to find resources that can help you find specialists. Healthcare Resources To find a medical professional who specializes in genetics, you can ask your doctor for a referral or you can search for one yourself. Online directories are provided by the American College of Medical Genetics and the National Society of Genetic Counselors. If you need additional help, contact a GARD Information Specialist. You can also learn more about genetic consultations from Genetics Home Reference. 

Answer: Most cases of Lewy body dementia are not thought to be inherited . The condition generally occurs sporadically in people with no family history of the condition. Rarely, the condition can affect more than one family member. Some of these cases appear to be due to single gene mutations that follow an autosomal dominant pattern of inheritance. Other familial cases do not follow a specific pattern of inheritance and likely are associated with the effects of multiple genes in combination with lifestyle and environmental factors.