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Side-effects of a brain tumour

Brain tumours may cause effects that can have an impact on your quality of life. They can affect different parts of the brain which control different functions. This means that the effects of a brain tumour you may experience depends on the location, its size and its aggressiveness. 

Find out more information about the common side-effects of a brain tumour and discover some of the strategies our community has found useful to cope with them. 

Personality changes

Brain tumours can cause personality changes such as anxiety and confusion.

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Memory difficulties

Learn how brain tumours can affect memory and get tips for coping.

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Communication difficulties

A brain tumour can cause difficulties with understanding or expressing language, or both.

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Fatigue is the most common side-effect of brain tumours and their treatment.

Living with fatigue


Depression can be triggered by a diagnosis, treatment or by the impact on daily life.

Understanding depression

Cognition (thinking skills)

Brain tumours and treatments can affect thinking skills, making aspects of daily life difficult.

About cognition

Seizures (epilepsy)

Up to 60% of brain tumour patients will experience a seizure at least once.

What are seizures?

Learning difficulties

It's estimated that over half of children with a brain tumour will experience a learning difficulty.

Find out more

Sight problems

Around 28% of people with a brain tumour report a vision problem, find out about sight problems.

Changes in vision