Managing Skin and Nail Changes During Cancer Treatment: A Practical Guide

If you are going through treatment for blood cancer, you may have already noticed unexpected changes to your skin and nails during cancer treatment. Perhaps your skin feels drier than usual, your fingernails have developed ridges or dark lines, or you have a new rash that appeared a few days after your last infusion. These changes can be unsettling, but they are among the most common side effects of cancer treatment — and in most cases, they are manageable with the right care.

According to the American Cancer Society, nearly every type of cancer treatment can cause skin or nail changes, including chemotherapy, targeted therapy, immunotherapy, radiation therapy, and stem cell transplant. Understanding why these changes happen and how to care for your skin during treatment can help you feel more comfortable and know when it is time to reach out to your oncology team.

Why Cancer Treatment Affects Your Skin and Nails

Chemotherapy targets rapidly dividing cells throughout the body, and skin and nail cells are among the fastest-growing cells you have. As treatment works to destroy cancer cells, it can also affect healthy cells in the skin, hair follicles, and nail beds. The result can range from mild dryness to more noticeable changes like rashes, darkening, peeling, or increased sensitivity to sunlight.

Targeted therapies and immunotherapies — which are increasingly common in blood cancer treatment — can cause their own distinct skin reactions. Some targeted drugs are associated with acne-like rashes, particularly on the face and chest, while immunotherapy can sometimes trigger inflammatory skin responses as the immune system becomes more active. These reactions look and behave differently from chemotherapy-related changes, and your care team can help you tell them apart.

For patients who undergo stem cell transplant, skin changes can also be an early sign of graft-versus-host disease, which is why your transplant team will monitor your skin closely during recovery.

Common Skin Changes During Cancer Treatment

Not everyone experiences the same skin changes, and the severity can vary depending on your specific treatment regimen. Here are some of the most frequently reported skin-related side effects:

• Dryness and itching — One of the most common complaints. Skin may feel tight, flaky, or rough, especially on the hands, feet, and lower legs. Itching can range from mild to disruptive.
• Rashes — Some treatments cause flat or raised red bumps, often on the face, chest, and back. These maculopapular rashes may appear pink-red on lighter skin tones and purple-brown on darker skin tones.
• Photosensitivity — Many chemotherapy drugs make your skin more sensitive to sunlight. You may sunburn more easily or develop a reaction in sun-exposed areas.
• Skin darkening — Some patients notice hyperpigmentation, where certain areas of skin become darker than surrounding skin. This can occur along veins used for infusions, on the palms, or in skin folds.
• Hand-foot syndrome — Certain chemotherapy drugs can cause redness, swelling, tingling, or peeling on the palms of the hands and soles of the feet. In more severe cases, blisters may develop.
• Increased sensitivity — Skin may feel more tender or reactive to products that never caused irritation before, including soaps, lotions, and laundry detergent.

Common Nail Changes During Treatment

Nail changes tend to develop more gradually than skin changes and may not appear until several treatment cycles in. According to the National Cancer Institute, common nail-related side effects include:

• Brittleness and cracking — Nails may become thin, fragile, and prone to splitting or breaking.
• Ridges and grooves — Horizontal lines or ridges across the nail, sometimes called Beau's lines, can develop as nail growth is temporarily disrupted by treatment cycles.
• Discoloration — Nails may darken, develop white bands, or turn yellowish. The nail bed itself may also change color.
• Lifting or separation — In some cases, nails may begin to lift away from the nail bed, a condition called onycholysis. This is more common with certain chemotherapy drugs and can make nails vulnerable to infection.
• Slowed growth — Nail growth may slow noticeably during treatment, and the new nail growing in may look different from the part that was there before treatment started.

The encouraging news is that most nail changes are temporary. As treatment ends and healthy nail growth resumes, affected nails typically grow out over several months.

Practical Tips for Skin Care During Treatment

A gentle, consistent skin care routine can make a meaningful difference in your comfort during treatment. These strategies are widely recommended by oncology care teams:

Daily Skin Protection

• Moisturize frequently with a fragrance-free, hypoallergenic cream or ointment — thicker products like creams and ointments work better than thin lotions for very dry skin
• Apply moisturizer within a few minutes of bathing while skin is still slightly damp to lock in hydration
• Use lukewarm water instead of hot water for showers and baths, and keep them short — hot water strips natural oils from the skin
• Switch to a mild, fragrance-free soap or cleanser — many patients find that products labeled for sensitive skin or eczema work well during treatment
• Pat skin dry gently with a soft towel rather than rubbing
• Wear broad-spectrum sunscreen with SPF 30 or higher on any exposed skin, even on cloudy days — reapply every two hours when outdoors
• Protect yourself from the sun with wide-brimmed hats, long sleeves, and sunglasses whenever possible

Products and Irritants to Avoid

• Avoid products with alcohol, fragrance, retinoids, or strong exfoliants — these can worsen dryness and irritation
• Skip anti-acne treatments unless specifically recommended by your care team, even for treatment-related rashes that resemble acne
• Switch to a fragrance-free, dye-free laundry detergent if your skin has become more reactive
• Wear soft, breathable fabrics like cotton against your skin — rough or synthetic materials can increase irritation
• Avoid shaving with a blade in areas where skin is irritated — an electric razor is gentler, or ask your care team about hair removal during treatment

Protecting Your Nails During Treatment

Taking a few precautions can help minimize nail damage and reduce the risk of infection:

• Keep nails trimmed short and filed smooth to prevent snagging and tearing
• Wear gloves when washing dishes, cleaning, or gardening to protect nails from water exposure, chemicals, and injury
• Apply a nail-strengthening base coat or clear polish if your care team approves — some patients find this helps prevent cracking and peeling
• Avoid acrylic nails, gel manicures, and nail polish remover with acetone during treatment
• Push cuticles back gently rather than cutting them — broken skin around the nail bed creates an entry point for infection, which is especially risky during treatment when your immune system may be suppressed
• Moisturize your cuticles and the skin around your nails regularly with a gentle oil or cream

When to Talk to Your Care Team

Many skin and nail changes during treatment are manageable with self-care, but some situations warrant a call to your oncology team. Reach out if you experience:

• A new rash that spreads quickly, blisters, or covers a large area of your body
• Signs of skin infection: increased redness, warmth, swelling, pus, or pain in any area
• Severe itching that disrupts sleep or daily activities and does not respond to moisturizer or over-the-counter remedies
• A nail that is lifting away from the nail bed or shows signs of infection such as redness, swelling, or discharge
• Painful hand-foot syndrome that makes it difficult to walk or use your hands
• Any skin changes accompanied by a fever of 100.4 degrees Fahrenheit or higher

A Reminder: These Changes Are Usually Temporary

It can be discouraging to look in the mirror and see skin that does not look or feel like yours. But for most patients, the skin changes caused by cancer treatment improve significantly — and often resolve completely — once treatment ends. Nail changes take longer to grow out, but new, healthy nail growth typically resumes within a few months of finishing treatment.

In the meantime, a gentle routine, good sun protection, and open communication with your care team can go a long way toward keeping you comfortable. You are already managing so much — taking care of your skin is one more way to take care of yourself.

Removing Barriers So You Can Focus on Healing

Managing side effects is hard enough without the added weight of everyday expenses piling up during treatment. When the bills do not stop but your income does, even basic routines like picking up the gentle soap your care team recommends can feel like a stretch.

The Live Like Brent Foundation Comfort Fund helps blood cancer patients overcome non-medical barriers to treatment by paying approved expenses directly to the company or organization providing the service — things like utility bills, rent, transportation to treatment centers, lodging, and food support. When those practical burdens are lifted, patients can focus their energy where it matters most.

If you or someone you love is navigating a blood cancer diagnosis, your support helps remove the barriers that stand between patients and the care they need.