It usually occurs in the area of the skin getting radiation. Radiation dermatitis: This is a rash that develops in patients receiving radiation therapy.It is common in patients who receive certain treatment drugs. Papulopustular eruption: This is a rash that may be itchy and painful and commonly occurs on the chest, upper back, or face.Some common types of rashes experienced by patients receiving treatment include: However, just like any medicine, people can have allergies to chemotherapy, immunotherapy, and targeted therapy drugs.Ī skin rash that develops suddenly while you are receiving a drug used to treat cancer could be a sign that you are allergic to that drug. It's important to know that a skin rash that is an expected side effect of treatment is not considered an allergy or allergic reaction. They usually develop within a few weeks of receiving the treatment, but can develop at any time during your cancer treatment. Skin rashes can show up on the scalp, face, neck, chest, upper back, and sometimes on other parts of the body. Rashes can itch, burn, sting, or be painful. Cancer treatments that can cause skin rash may include chemotherapy, radiation therapy, immunotherapy, targeted therapy, and stem cell transplant. A skin rash is a common side effect of certain types of cancer treatments.
