It sounds like you're experiencing back spasms after starting Enhurtu (trastuzumab deruxtecan) for metastatic breast cancer (MBC). While the specific context provided does not mention Enhurtu directly, it does discuss back pain and musculoskeletal symptoms related to breast cancer treatments, including aromatase inhibitors Show Full Answer

It sounds like you're experiencing back spasms after starting Enhurtu (trastuzumab deruxtecan) for metastatic breast cancer (MBC). While the specific context provided does not mention Enhurtu directly, it does discuss back pain and musculoskeletal symptoms related to breast cancer treatments, including aromatase inhibitors like exemestane.

Here are some relevant points from my knowledge base:

- Aromatase Inhibitors and Back Pain: Exemestane, an aromatase inhibitor, can cause joint pain, muscle weakness, and inflammation, which might contribute to back pain.
- Timing of Symptoms: AIMSS (Aromatase Inhibitor-Induced Musculoskeletal Symptoms) generally appears about two months after treatment begins and peaks around four months but can occur up to two years later.
- Metastatic Breast Cancer: Breast cancer that has spread to the spine can cause back pain, known as spinal metastases.

Given your history and current symptoms, it would be best to discuss these back spasms with your oncologist to determine if they are related to your treatments or if there might be another cause. They can provide personalized advice and potential adjustments to your treatment plan.

 This AI-generated response comes from MyBCTeam and other selected sources. It is not a substitute for medical advice. Always ask your doctor about specific health concerns.

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