Proteinopathies Expression in Skin of Neurodegenerative Disorders

Inclusion Criteria for patients: * Patients 45 years and older * Men and women * Patients diagnosed with Alzheimer's disease, frontotemporal lobe dementia, Parkinson's disease, atypical Parkinsonism, amyotrophic lateral sclerosis or normal pressure hydrocephalus * Patients that voluntarily accept to participate in the study and accept the consent form Inclusion Criteria healthy control subjects: * People 45 years and older * Men and women * Subjects can be related to a patient but not by blood (for example spouse of a patient) * Subjects don't have direct family history of a neurodegenerative control * Subjects don't have any clinical findings suggesting dementia * Subjects voluntarily accept to participate in the study and accept the consent form Exclusion Criteria: * Patients or controls that have a personal history of cerebrovascular disease, psychiatric disease, post traumatic dementia or HIV related dementia * Patients in which the diagnosis is not clear or hasn't been confirmed * Patients or controls that have a neuroinfection * Patients or controls that a diagnosed skin disease * Patients that have an "atypical" presentation of the disease * Patients or controls that have diagnosis of a coagulopathy