Visual disturbances
Dementia is not only evident in obvious gaps in the memory, but also in the eyes. For example, beta-amyloid proteins are deposited in the patient's retina and eye lens – long before plaques form in the brain. This affects the person in question in the form of occasional visual disturbances despite normal eye function, for example faces and objects are not recognized.
Listlessness
A lack of energy and initiative can be a sign of dementia. Those affected withdraw to their snail shell and completely lose interest in current affairs, their work or their hobbies. They avoid society and social contacts, not least because of their own personal changes. In the worst case, the sick person falls into depression.
Everyday difficulties
The limitation of mental performance is noticeable in simple everyday tasks. Those affected have e.g. Difficulty performing simple everyday activities such as dressing, shopping, cooking food or using transportation. At first, these signs can still be considered absent-mindedness, but over time the difficulties go beyond.
Mood swings
People with dementia often suffer from extreme mood swings. Sufferers often change their mood from confused, suspicious, depressed and anxious to restless. They easily get upset, for example when a routine is broken, but often out of the blue. An explanation for the sudden change can usually not be found.
Speech disorders
The language can also be used to determine whether someone is possibly suffering from dementia. If patients no longer remember certain words, they instead use inappropriate filler words, for example, or even invent entirely new terms.
You can find everything about Alzheimer's symptoms here.