A stroke can sometimes lead to hallucinations or delusions. Hallucinations and delusions are also known as 'psychotic symptoms'. This can be due to mental health problems, but it can also be caused by a stroke. It may happen in up to one in 20 people after a stroke.

Are hallucinations a side effect of stroke?

Conclusions: Visual hallucinations are relatively frequent in patients with acute stroke and they are self-limited. Patients with occipital lesions and sleep disturbances are more likely to suffer them.

What can cause sudden hallucinations?