Cognitive changes refer to changes in your memory, concentration and ability to be able to think clearly.
These changes are also sometimes called chemo brain or chemo fog because they were originally thought to be due to chemotherapy. But they could be due to a variety of reasons, including cancer treatments and the cancer itself.
Find out what causes cognitive changes and how they might affect you.
Read about tips that can help you cope with cognitive problems (chemo brain).
Read about research that has been carried out into the causes of cognitive changes and chemotherapy.