Medical Oncologist
Skin side effects
Skin changes during chemotherapy
Four changes are common: dryness and itching, darkening, rashes, and sensitivity to sun. Some drugs also cause sore palms and soles or nail changes. Most are explained by how the drugs affect fast-growing skin cells, and most improve after treatment ends. A few, such as a blistering rash, need prompt attention.
NG
Medically reviewed by Dr. Naresh GunduConsultant Medical Oncologist · MBBS, DNB (Internal Medicine), DM (Medical Oncology, AIIMS) · last reviewed September 2026, next review due September 2027
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The short answer
What happens to the skin during chemotherapy?
Four changes are common: dryness and itching, darkening, rashes, and increased sensitivity to sun. Some drugs also cause sore, peeling palms and soles, nail changes, or a flare in skin that was previously treated with radiotherapy. Most of these are explained by how the drugs affect fast- growing cells, and most improve after treatment ends.
They are rarely dangerous in themselves, but they matter. They cause discomfort, affect appearance and confidence, and a few of them, such as a spreading blistering rash or an infected crack, need prompt attention. Knowing which is which is most of the job.
Ask which skin effects your drugs cause
Effects differ a great deal between drugs. Knowing what to expect lets you start protective care early and recognise what is normal for your treatment.
Gentle is the rule
Lukewarm water, mild unperfumed soap, a simple moisturiser, soft cotton clothing and sun protection. Most skin problems on treatment are made worse by harsh products and friction.
Report the few that need attention
Blistering, peeling, a rapidly spreading rash, a rash with fever, or signs of infection. These should not wait for the next appointment.
Show any cream, oil or home remedy to your team before using it on skin during treatment.The common changes
What to expect, and why it happens
- Dryness and itching
- Skin loses oil and moisture, becoming rough, flaky and itchy, often worse in air-conditioned rooms and dry seasons. Regular moisturising helps considerably.
- Darkening
- Patches, lines along veins, darker palms, soles, nails or tongue. More noticeable on brown skin and usually fading slowly after treatment. Sun protection helps.
- Rash
- From mild acne-like spots with some targeted drugs to red, itchy patches. Most are manageable; a blistering or rapidly spreading rash needs urgent review.
- Sun sensitivity
- Skin burns and darkens more easily in sun than usual, even with short exposure. Particularly relevant in Telangana, where the sun is strong most of the year.
- Hand-foot reactions
- Tender, red or darkened, peeling palms and soles with certain drugs, which can become painful enough to stop walking. Early reporting and prevention make a difference.
- Nail changes
- Ridges, dark bands, brittleness, and occasionally a nail lifting. Most grow out over months. A red, painful nail fold can be an infection.
Not sure whether this applies to you?
Ask an oncologistPractical
A simple daily approach to skin care
Fewer products, gentler habits.
Wash gently
Lukewarm water, a mild unperfumed soap or soap substitute, and a short bath. Pat dry with a soft towel rather than rubbing.
Avoid
- Very hot baths
- Antiseptic liquids in bath water
Moisturise twice a day
A plain, fragrance-free moisturiser after bathing and at bedtime, more often on hands and feet. Ask your team if a particular cream is recommended for your drugs.
Protect from sun
Shade, full sleeves, a hat, dupatta or umbrella, and a sunscreen your team approves, especially between late morning and afternoon.
Remember
- Sun reaches through vehicle windows
- Continue after treatment ends
Wear soft, loose cotton
Loose cotton clothing and bedding reduce friction and sweating. Wash new clothes before wearing, and use mild detergent.
Do not scratch or pick
Keep nails short, treat itching with moisturiser and cool compresses, and ask your team about medicine if itching disturbs sleep.
!
Get medical help the same day for any of these
A rash that is blistering, peeling, or spreading quickly · a rash with fever, or with sores in the mouth, eyes or genitals · swelling of the face, lips or tongue, or difficulty breathing, which needs the nearest emergency department immediately · a red, hot, painful, swollen area of skin that is spreading · pus or red streaks from a crack, nail fold or wound · pain, redness or swelling around a port, line or drip site · a fever at or above your team's threshold. Say clearly that the person is on chemotherapy.
Being straight with you
What this page cannot tell you
It cannot tell you which of these changes you will get, because that depends on your specific drugs, doses, skin type and any radiotherapy. Ask your team what is expected for your treatment so you can prepare and recognise it.
It also cannot diagnose a particular rash or patch. Most are expected drug effects, but some are allergic reactions, infections or unrelated conditions that need examination.
Skin effects rarely mean treatment should stop
Most are managed alongside continued treatment. Your team may adjust the dose or add a cream or medicine. Do not stop treatment yourself because of a skin change.
Be careful with home remedies
Neem pastes, raw turmeric, lemon juice, fairness creams and herbal oils are often suggested. Some irritate fragile skin, cause reactions or interact with treatment. Ask first.
Radiotherapy skin needs extra care
If you have had radiotherapy, the treated area can react to some drugs even months later. Mention any redness in a previously treated area.
Keep a note of changes by cycle
Which change appeared, in which cycle, and how long it lasted. Patterns across cycles help your team plan skin care for the next one, and tell them whether a new change is expected or unusual.
Skin care is part of treatment, not vanity
Cracked skin lets infection in when counts are low, and sore hands and feet can stop somebody walking or cooking. Looking after the skin protects the patient as well as their comfort and appearance.
Ask before starting anything new on the skin
New soaps, creams, oils, hair dyes and cosmetics introduced during treatment are a common cause of fresh irritation. Keep to the products that are already suiting you, and check with your team before adding anything, so that a new reaction is easier to trace.
What to do next
Ask your team which skin effects your drugs cause. Wash gently, moisturise twice a day, protect from sun and wear soft cotton. Stop using harsh products and home remedies without advice, and report blistering, spreading rashes, infection or a rash with fever the same day.
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Commonly believed
Four ideas about skin on treatment
"Skin changes mean the chemotherapy is damaging the organs."
Skin effects happen because the drugs affect fast-growing skin cells directly. They are not a sign of organ damage, which your team monitors with blood tests.
"Natural pastes are the safest thing to put on the skin."
Natural does not mean gentle. Some pastes and oils irritate fragile skin or cause reactions. A plain, fragrance-free moisturiser is usually safer.
"A rash means I am allergic and must stop treatment."
Many rashes are expected drug effects managed alongside treatment. A blistering or spreading rash, or one with fever, needs urgent review; otherwise report it and follow advice.
"The skin will never be the same again."
Most changes improve after treatment ends. Darkening and nail changes can take months, but significant recovery is usual.
Questions we are asked
Common questions about skin changes
Why does chemotherapy affect the skin?
Many drugs act on fast-growing cells, and skin, hair and nails renew constantly. That causes dryness, darkening, rashes and sensitivity with some drugs.
Are skin changes serious?
Most are uncomfortable rather than dangerous. A blistering or spreading rash, a rash with fever, infection signs, or face swelling need urgent attention.
What soap should I use?
A mild, unperfumed soap or soap substitute with lukewarm water. Avoid antiseptic liquids, strong soaps and very hot baths, which dry the skin further.
Can I use coconut oil?
Plain oil on intact, dry skin is often tolerated, but avoid it on broken or blistered skin and during radiotherapy unless your team agrees. Ask what they recommend.
Will the changes go away after treatment?
Most improve over the months afterwards. Dryness and rashes often settle sooner; darkening and nail changes can take longer.
Do I need sunscreen?
Many drugs make skin more sensitive to sun, so sun protection matters. Ask your team for a suitable sunscreen, and combine it with shade and covering clothing.
What should I do about itching?
Moisturise often, use cool compresses, wear loose cotton, keep nails short, and avoid scratching. Ask your team about medicine if itching disturbs sleep.
Should I see a skin specialist?
Your oncology team will refer you if needed, for example for a severe rash or persistent problem. Ask if a change is distressing or not improving with basic care.
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Sources
- American Cancer Society — Skin Problems
- Macmillan Cancer Support — Skin changes
- National Cancer Institute — Chemotherapy and You: Support for People With Cancer
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.
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