Radiotherapy skin care

Overview

Radiotherapy skin care is the practice of looking after the skin that has received radiation treatment for cancer. Radiation can make the skin look and feel like a mild to severe sunburn. Good skin care during treatment helps keep the skin comfortable, reduces the severity of reactions, and helps the skin heal.

Yes, radiation skin reactions are very common. More than half of people having radiation therapy experience some skin redness, dryness, or peeling.

Radiotherapy skin reactions can affect anyone receiving external beam radiation. They are more likely in areas where skin rubs together, such as under the breasts, in the groin, or in skin folds, and in people receiving higher radiation doses.

Symptoms

Common symptoms

• Redness that looks like a sunburn
• Dryness and flaking
• Itching
• Peeling or darkened skin
• Tenderness or pain
• Swelling in the treatment area

Symptoms in children

• Children's skin is more delicate, so reactions may appear earlier and be more sensitive. Watch for extra redness, swelling, or fussiness in young children, and tell the treatment team.

Symptoms in older adults

• Older adults often have thinner, more fragile skin and may heal more slowly. Redness and dryness can become sore more easily, so it is important to check the skin often and use gentle care from the beginning.

Causes

Main causes

• Radiation therapy damages skin cells in the treatment area, causing the skin to react like a sunburn.
• This is a normal effect of radiation, and its severity depends on the radiation dose and the area being treated.
• Some chemotherapy medicines can make skin reactions worse when given together with radiation.

Risk factors

• Higher radiation doses
• Treatment to sensitive areas like the head, neck, breast, underarms, or groin
• Having a larger body size
• Existing skin conditions such as psoriasis or eczema
• Smoking or diabetes, which can slow healing

When to see a doctor

See a doctor urgently if:

• Contact your care team the same day if you notice pus, yellow crust, a bad smell, or increasing warmth or redness in the treatment area.
• Tell them right away if your pain becomes severe or is not relieved by the medicine your team suggested.
• Report any large open sores or areas where the skin is peeling heavily.

Book a routine appointment if:

• Before starting radiation, ask your doctor or nurse how to care for your skin during and after the treatment.
• Speak to your care team if you have any questions about washing the area or using lotions, creams, or deodorants.
• Be sure to mention any skin changes at your regular radiation appointments, even if they seem small.

Diagnosis

A doctor or radiation nurse will look at the treatment area and ask about your symptoms. There is no special test needed to diagnose radiation skin reactions.

Tests that may be done

• Usually no tests are needed. Your care team will rely on what they see and on what you tell them about itching, pain, or soreness.

What to expect at your appointment

Your care team will inspect your skin at each radiation session. They will note any redness, dryness, or peeling and recommend steps to keep the area clean and comfortable.

Treatment

Treatment focuses on protecting the skin, relieving symptoms, and letting the area heal naturally. Your radiation team will guide you on how to wash, moisturize, and dress the area. In severe cases, they may suggest a pause in radiation so your skin can recover.

Self-care at home

• Wash the treated area daily with lukewarm water and a very mild, unscented soap (or one recommended by your care team).
• Pat the skin dry with a soft towel. Do not rub.
• Wear loose clothes made of soft, natural fabrics like cotton.
• Do not use heating pads, hot-water bottles, or sun lamps on the treated area.
• Avoid shaving the treated area without your team's permission. If allowed, use an electric razor.
• Use only skin products, such as lotions, creams, or deodorants, that your radiation team approves, and apply them gently.

Medical treatments

Your care team may recommend prescription creams or special dressings to soothe the skin and help it heal. If an infection develops, they can prescribe a medicated treatment. Do not put anything on the treated skin without asking your team first, especially over-the-counter creams or ointments.

Living with this condition

During treatment, plan for extra rest and make skin care part of your daily routine. Check your skin each day and report any significant changes early. After radiotherapy ends, the skin usually continues to heal for a few more weeks, and the area may be more sensitive for months.

Lifestyle tips

• Stay well rested to support your body's healing.
• Keep the treated area out of direct sunlight. If you wear a hat, choose a wide-brimmed one to shade your face and neck.
• Ask your team before swimming, using a sauna, or applying makeup in the treatment area.
• If you smoke, talk to your care team about support to quit — smoking slows down healing.

Diet and exercise

Eat a balanced diet with plenty of fruits, vegetables, protein, and fluids to help your skin repair itself. Gentle exercise, like walking, is often fine, but check with your care team first, especially if exercise causes friction or pressure on the treated area.

Mental health and emotional wellbeing

Skin changes can feel very personal and may be upsetting. It is normal to feel anxious, frustrated, or self-conscious. Talk with your care team about how you are feeling — they can connect you with counseling or patient support services.

Prevention

Skin reactions cannot always be prevented, but their severity can often be reduced by following your radiation team's skin care advice from day one, using non-irritating products, and avoiding friction and sun exposure. Starting a gentle skin care routine early can make a big difference.

Complications

If left untreated

• If the skin becomes very sore or breaks open, there is a risk of infection, which can be serious.
• Severe skin reactions can lead to gaps in radiation treatment, which may reduce how well the treatment works.
• Some people may have scarring or long-lasting changes in skin color in the treated area.

Long-term outlook

With careful skin care and support from your radiation team, most skin reactions heal well, usually within 2 to 4 weeks after the last treatment. Some people notice lasting changes in skin color or texture, but these tend to fade over time. Treatments can be adjusted if needed, so please keep communication open with your care team.

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