Appearance: Taking Control During Treatment Treatments such as chemotherapy and radiation can damage a person's skin, hair, and nails. Many of these changes will go away after treatment ends. But such side effects, particularly hair loss, may also damage a person's spirits. Hypercalcemia (High Calcium Level in the Blood) Your calcium level can become too high if your cancer has spread to the bones, causing calcium to be released, or your cancer may release certain hormones that affect the normal systems that control the calcium level in your blood. Struggling to Breathe: Tips for Managing Dyspnea Dyspnea is the technical word for difficulty breathing. It's a common symptom in people who have lung cancer or have cancer that has spread to the lungs. Hormonal Therapy: Managing Side Effects in Women The female hormones estrogen and progesterone promote the growth of some breast tumors. Hormonal therapy may be given to block these hormones from stimulating tumor growth.