Side effects of 5-day radiation for breast cancer

The treated skin can become warm, dry, itchy, darker or tender, especially where clothing rubs. The breast may feel fuller, firmer or achy. Tiredness can build during the course and may continue for a while afterwards. The exact reaction depends on the area treated, the dose plan, skin sensitivity and whether other treatment is being given.

Wash gently with lukewarm water, pat dry and use only products approved by your radiation team. Wear soft, loose clothing and protect the area from direct sun and extreme heat. Rest when needed, but keep light movement if comfortable. Do not scratch peeling skin or apply adhesive dressings unless advised.

Tell the radiation team if the skin becomes broken, wet, increasingly painful or develops blisters. Contact them promptly for fever, rapidly increasing breast swelling, drainage, severe pain or trouble breathing. A new symptom outside the treated area also deserves review rather than being assumed to be a radiation effect.

Which moisturiser is suitable for my skin? When may I use deodorant, swimming pools or a bra? How should I manage pain, and who should I call if the reaction worsens after my last visit?