Skin changes during radiation
Caring for skin in the treated area
Sources checked: September 2026
The short version
Skin in the radiation treatment area can become red, dry, itchy, or sensitive over the course of treatment — often compared to a sunburn — and usually improves in the weeks after treatment ends.
Skin in the area being treated with radiation can become red, dry, itchy, or tender as treatment progresses — often compared to a sunburn. It usually appears gradually over the course of treatment and improves within a few weeks afterward.
- Use only the skin products your radiation team approves — some lotions can interfere with treatment
- Wear loose, soft clothing over the treated area
- Avoid sun exposure and hot water directly on the treated skin
- Avoid shaving the area with a razor if skin becomes irritated; ask your team about alternatives
When to mention it
Tell your radiation team about blistering, open skin, or signs of infection like increasing warmth, swelling, or discharge.
Questions you may want to ask
Which products are safe for me to use on the treated skin?
How long after treatment ends should I expect this to improve?