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What is chemobrain?
11 December 2025
This refers to a term related to the problems of cognitive and memory dysfunction that occur during and after chemotherapy treatment for cancer.
Chemobrain, also called “chem fog” or chemofusion, can appear at any time, mainly as a result of chemotherapy. However, it can also be linked to other procedures such as hormone therapy, radiation, and surgery, all of which can cause cognitive problems in the short, medium, and long term.
Factors that can contribute to the onset of chemobrain, besides certain types of cancer and brain tumors, include the following:
- Diseases such as anxiety, nutritional deficiency, depression, diabetes, and thyroid problems.
- Immunotherapy.
- Medications for other cancer-related symptoms.
- Chemotherapy.
- Radiation therapy.
- Hereditary susceptibility to chemobrain.
- Hormone therapy.
- Bone marrow transplant.
- Oncological treatments.
Signs and symptoms Chemobrain
The severity and duration of symptoms depend on the individual, but they usually include:
- Confusion.
- Problems carrying out certain activities.
- Difficulty learning new skills or abilities.
- Inability to finish tasks.
- Taking longer than normal to perform daily activities.
- Short-term memory loss.
- Concentration problems.
- Problems remembering conversations, images, or words.
Diagnosis and treatment Chemobrain
The specialist will analyze your symptoms and clinical history, then perform a physical exam and request blood tests and brain scans to rule out other conditions.
Treatment for chemobrain is personalized and focuses on relieving symptoms and controlling the causes that contribute to memory problems through:
- Memory and thinking exercises.
- Concentration techniques.
- Medications.
- Cognitive rehabilitation.
- Relaxation and stress management techniques.
At the Neurological Center, a group of highly trained and certified doctors in various neurological specialties are prepared to serve you with the quality and warmth that characterizes us.
Related centers and departments Chemobrain
Fuentes:
- cancer.gov
- stjude.org
- nih.gov
- elsevier.es
- msdmanual.com
- mayoclinic.org
- medlineplus.gov
- medigraphic.com
- Uclés VV, Rodríguez CG. Quimiocerebro ¿Una entidad desconocida?. Rev Clin Esc Med. 2018;8(1):1-10.
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The dissemination of the content of this material is for informational purposes only and does not replace, under any circumstance or condition, a consultation with a specialist doctor, for which the ABC Medical Center is not responsible for the different use that may be given to it. If you require more information related to the subject, we suggest you contact the specialist doctor you trust directly.
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