Many people with mouth sores use special mouth rinses to ease the pain. Temporary hair loss is another common side effect of chemotherapy. Sometimes the hair falls out all at once, and other times it slowly thins out. There's no way to know whether all the hair will come out or if some parts of the body will lose more hair than others. Even if hair is lost, it usually grows back after treatment has stopped.
Some people wear a wig, cap, or scarf until their hair grows back.
The bone marrow, the innermost part of the bone, makes new blood cells. If chemotherapy affects the bone marrow, it cannot produce as many blood cells as usual. Red blood cells carry needed oxygen to the tissues. When red blood cells are low, the person may be tired, pale, or cranky. White blood cells fight infection.