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Cognitive Problems or Changes in Thinking

Some people with cancer notice changes in how they think before, during, or after cancer treatment. They may have trouble remembering, paying attention, or thinking clearly. It helps to know why these changes happen and when to find help and support.

Changes in Memory, Thinking, and Focus (Chemo Brain)

Cancer treatment can cause a mental cloudiness some people notice before, during, and after cancer treatment. Learn more about changes in memory, thinking, and focus (sometimes called "chemo brain") here.

Confusion and Delirium

Many things can cause confusion and delirium in cancer patients. Learn what patients and caregivers can do to help manage these side effects.

Related Resources

Flyer: What to Do for Memory, Thinking, and Focus Changes

More Resources

Worksheet: Track Your Chemotherapy Side Effects

Worksheet: Track Your Radiation Therapy Side Effects

Personal Health Manager

Organize your cancer journey with the American Cancer Society Personal Health Manager.

Caregiver Resource Guide

A helpful tool for people who are caring for someone with cancer. View the complete guide here.

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