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 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] The Human Phenotype Ontology (HPO) provides the following list of features that have been reported in people with this condition. Much of the information in the HPO comes from Orphanet, a European rare disease database. If available, the list includes a rough estimate of how common a feature is (its frequency). Frequencies are based on a specific study and may not be representative of all studies. You can use the MedlinePlus Medical Dictionary for definitions of the terms below. Signs and Symptoms Approximate number of patients (when available) Autosomal dominant inheritance - Delusions - Dementia - Fluctuations in consciousness - Parkinsonism - Visual hallucinations - 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 ε4 allele and mutations in the GBA gene have been associated with an increased risk of Lewy body dementia and the APOE ε2 allele with a decreased risk. [5] [7] [2] 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] 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. 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.

Answer: 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.  Studies of these families suggest that there may be a genetic component to the condition in some cases. 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. Most cases of Lewy body dementia are not thought to be inherited. There is currently no cure for Lewy body dementia; however, medications may be available to help manage the associated symptoms.