Dementia symptoms

Dementia is a set of symptoms which occur when the brain is damaged by a condition, such as Alzheimer’s disease, Lewy Body disease or a series of strokes.

The specific symptoms experienced by a person with dementia depend on the parts of the brain that are damaged and the type of the condition or disease.

Please, be aware that these symptoms are not always immediately noticeable, but often occur over a varied period of time.

A person with dementia will have cognitive symptoms:

Day-to-day memory

Difficulty recalling events that happened recently.


difficulties following a conversation or finding the right word for something.


Losing track of the day or date, or becoming confused about where they are.

Concentrating, planning or organizing

Difficulties making decisions, solving problems or carrying out a sequence of tasks (eg. cooking a meal).

Visuospatial skills

Problems judging distances (eg on stairs) and seeing objects in three dimensions.

Dementia is progressive, which means the symptoms gradually get worse over time. How quickly dementia progresses varies greatly from person to person. As dementia progresses, the person may develop behaviors that seem unusual or out of character.

Dementia Forum

If you want to know more about different symptoms you can read more about it on our partner’s website.