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Cancer Health Center

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Depression (PDQ®): Supportive care - Patient Information [NCI] - Treatment of Depression

The decision to treat depression depends on how long it has lasted and how much it affects your life.

If you cannot adjust to the cancer diagnosis after a long time and you have lost interest in your usual activities, you may have depression that needs to be treated. Treatment of depression may include medicines, talk therapy, or both.

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Cancer of the colon is a highly treatable and often curable disease when localized to the bowel. Surgery is the primary form of treatment and results in cure in approximately 50% of the patients. Recurrence following surgery is a major problem and is often the ultimate cause of death. Incidence and Mortality Note: Estimated new cases and deaths from colon cancer in the United States in 2014:[1] New cases: 96,830 (colon cancer only). Deaths: 50,310 (colon and rectal cancers combined)...

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Treatment of major depression usually includes medicine.

It's important to use antidepressants only under the care of a doctor.

Antidepressants help relieve depression and its symptoms. When you are taking antidepressants, it's important that they are used under the care of a doctor. You may be treated with a number of medicines during your cancer care. Some anticancer medicines may not mix safely with certain antidepressants or with certain foods, herbals, or nutritional supplements. It's important to tell your healthcare providers about all the medicines, herbals, and nutritional supplements you are taking, including medicines used as patches on the skin. This can help prevent unwanted reactions.

Many antidepressants take from 3 to 6 weeks to work. Usually, you begin at a low dose that is slowly increased to find the right dose for you. This helps to avoid side effects.

Check with your doctor before you stop taking an antidepressant. You may need to slowly reduce the dose of some types of antidepressants. This is to prevent side effects you may have if you suddenly stop taking the medicine.

There are different types of antidepressants.

Most antidepressants help treat depression by changing the levels of chemicals called neurotransmitters in the brain. Nerves use these chemicals to send messages to one another. Increasing the amount of these chemicals helps to improve mood. The different types of antidepressants act on these chemicals in different ways and have different side effects.

Three types of antidepressants are commonly used to treat depression in patients with cancer:

  • SSRIs (selective serotonin reuptake inhibitors): Medicines that increase the brain chemical serotonin.
  • Tricyclic antidepressants: Medicines that increase the brain chemicals serotonin and norepinephrine.
  • Central nervous system (CNS) stimulants: Medicines that increase the brain chemicals dopamine and norepinephrine.
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