Here are the 10 most common adverse events experienced by breast cancer patients, across surgery, chemotherapy, radiation, endocrine therapy, and targeted therapies. Not every patient experiences all of these, but these come up most often in clinical practice and survivorship studies.
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Breast Cancer- Treating Side Effects
Breast Cancer- treating side effects is a PeopleBeatingCancer pillar post, identifying those treatment side effects and how to reduce the risk of developing the side effect in the first place, or identifying and healing the side effect if it appears after therapy begins. .
The two therapies below are the most complete form of side effect prevention according to research.
Complementary Therapies to Help Manage Side Effects of Breast Cancer Treatment
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Fatigue
The most frequently reported adverse effect. Can be profound and persistent, especially during chemotherapy, radiation, and endocrine therapy. -
Pain
Includes post-surgical pain, neuropathic pain from chemotherapy, musculoskeletal pain from aromatase inhibitors, and radiation-related discomfort. -
Nausea and vomiting
Common with chemotherapy (less so with modern antiemetics), and occasionally with radiation or targeted therapies. -
Hair loss (alopecia)
Typically associated with many chemotherapy regimens; can be emotionally distressing even when temporary. -
Peripheral neuropathy
Tingling, numbness, or pain in hands and feet, most often linked to taxanes (e.g., paclitaxel) and sometimes long-lasting. -
Lymphedema
Swelling of the arm or chest wall after lymph node surgery or radiation; risk increases with axillary dissection. -
Skin toxicity
Includes radiation dermatitis, surgical scarring, rashes from targeted therapies, and nail changes with chemotherapy. -
Cognitive changes (“chemo brain”)
Problems with memory, attention, and processing speed; can occur during and after treatment. -
Hormonal and menopausal symptoms
Hot flashes, night sweats, vaginal dryness, sexual dysfunction, and mood changes—especially common with tamoxifen, aromatase inhibitors, and ovarian suppression. -
Psychological distress
Anxiety, depression, fear of recurrence, and body-image concerns are highly prevalent throughout diagnosis, treatment, and survivorship.
Important nuance
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Side effect profiles vary by subtype (HR+, HER2+, triple-negative), treatment intensity, age, and comorbidities.
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Many adverse events persist into survivorship, making long-term management just as important as acute care.
🧾 Quick Summary Table
| Side Effect | Most Helpful Integrative Therapies |
|---|---|
| Fatigue | Exercise, Yoga, Tai Chi |
| Sleep | CBT-I, Mindfulness, Acupuncture |
| Anxiety/Depression | MBSR, CBT, Yoga |
| Hot flashes | Acupuncture, CBT |
| Cognitive issues | Exercise, Mindfulness |
| Pain | Acupuncture, Massage, PT |
| Neuropathy | Acupuncture, Exercise |
| Lymphedema | Exercise, Manual drainage |
| Nausea | Acupressure, Guided imagery |
| Bone loss | Resistance exercise |
I am a long-term survivor of an incurable blood cancer called multiple myeloma. Dispite the fact that my cancer and treatments were so different than BC’s typical side effects, the complementary therapies are the same. I use acupuncture to manage my pain. Brain games to improve my chemobrain, etc.
Please scroll down the page, post a question or a comment and I will reply to you ASAP.
Hang in there,
David Emerson
- Cancer Survivor
- Cancer Coach
- Director PeopleBeatingCancer
Breast Cancer Treatment Side Effects
Side effects of breast cancer treatment vary from person to person, but knowing what to expect can empower and prepare you.
Updated on October 3, 2025
In this article
There are many different ways that your body may respond to treatments for breast cancer. While some people experience serious reactions to treatment early on, others may be surprised to find that their symptoms during treatment are not as bad as they feared or emerge months or even years later.
Wherever you fall on this spectrum, one thing is clear: You need to pay close attention to your body and alert your healthcare team anytime something feels off, be it physical or mental.
If you tell your treatment team about problems you are experiencing as early on as you can, they can help you find relief by prescribing medications to reduce the symptoms or changing your treatment. Treating side effects early on can also help to reduce the risk of the problems becoming more severe and potential delays in your treatment.
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