The Swedish BioFINDER - Primary Care Study

Inclusion Criteria: 1. The patient seeks medical help because of cognitive symptoms experienced by the patient and/or informant OR The general practitioner suspects a progressive neurodegenerative disorder including, but not limited to, Alzheimer's disease, Lewy body disease, frontotemporal lobar degeneration or subcortical vascular cognitive impairment. 2. The main symptom is usually memory complaints, but could also be executive, visuo-spatial, language, or attention complaints. 3. Age ≥40 years 4. Subjective cognitive decline, mild cognitive impairment or mild dementia Exclusion Criteria: 1. Already diagnosed dementia 2. Significant unstable systemic illness or organ failure that makes it difficult to participate. 3. Current significant alcohol or substance misuse. 4. Refusing investigation at the Memory clinic 5. Cognitive impairment with acute onset due to stroke 6. The cognitive impairment can with certainty be explained by another condition or disease such as significant anemia, infection, severe sleep deprivation, psychotic disorder, moderate-severe depression, alcohol abuse etc.