Why Does Hair Loss Occur During Treatment? The normal scalp has 100,000 hairs! Some people have thin hair; others are blessed with thick hair. Ten to fifteen percent of your hair is in the resting phase. Eighty-five to ninety percent is actively growing and is susceptible to chemotherapy and radiation. The degree of hair loss depends on the chemotherapy drug, the dosage of chemotherapy or radiation, and how it is given.
Hair loss, or alopecia, occurs because anticancer
drugs can also affect normal cells, including the cells responsible
for hair growth. This effect, however, is not permanent,
and healthy cells grow back normally once chemotherapy is completed.
What Are The Symptoms Of Hair Loss?
Chemotherapy: Hair loss, alopecia, will start approximately 2-3 weeks after your first dose of chemotherapy, but won't be total until 1-2 months have elapsed. Hair loss is reversible and will be back totally about 3-4 months after the last chemotherapy dose. Your hair may even grow while you're on chemotherapy. This doesn't mean that the chemotherapy isn't working. Unfortunately, some of this regrown hair may also fall out. Hair on the head is most commonly affected, but hair loss may also occur on the face, arms, legs, underarms, and pubic area. The scalp may become tender and hair that is still growing may become dull and dry.
Radiation:
Only hair that is in a treatment field will be affected with hair
loss. Generally, the hair loss will begin approximately 2-3 weeks
after the start of treatments. This hair will grow back after
the treatments are completed. If a higher dose of radiation is
delivered, there is a chance that the hair loss will be permanent.
Please check with your Radiation Oncologist or nurse if you have
questions and concerns about this.
Some Suggestions about Hair
Loss: Hair loss, even when expected,
can be very discouraging and depressing. Many cancer support groups
can offer advice and services to help you understand and handle
all the effects of cancer, chemotherapy, and radiation.
Losing hair from your head, face, or body can
be hard to accept. It's common and perfectly all right to feel
angry or depressed about this loss. Talking about your feelings
can help. Remember that the hair lost during treatment may grow
back even thicker than ever.