Skin Symptoms
Cancer treatments may also cause skin changes. Some of these changes include dryness, redness, itching, pain or discomfort, discoloration, possibly darkening of the skin (hyperpigmentation), increased sensitivity to sunlight, or rashes. This may occur with specific chemotherapy and biotherapy treatments. Talk with your health care team to learn what side effects your treatment may cause. While skin problems caused by radiation therapy and chemotherapy are often mild, they may be more severe if you are receiving a stem cell transplant, targeted therapy, or immunotherapy. Let your health care team know if you notice any skin changes so they can be treated promptly.
Sunlight fundamentally consists of three wavelengths: UVA, UVB, and UVC. Earth's ozone layer separates and holds the most damaging UVC rays. People with low levels of vitamin D in their blood have much higher incidences of practically all diseases and sickness: cancer, diabetes, obesity, osteoporosis, heart attack, stroke, depression, cognitive impairment, autoimmune conditions, and so on