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How to Talk to Your Child about Cancer

Finding out your child has cancer can be overwhelming. You may not know what to do or how you will get through this. Remember that you are not alone. Your health care team will be there to help you.

You may want to tell your child about their diagnosis yourself. Or you may want help with difficult conversations. Be sure to ask for help from your care team. They have experience in this area and can offer suggestions.

When talking your child about cancer, keep these 3 things in mind:

Children with cancer need to know they are loved, supported, and surrounded by people who care about them.

Young cancer patient on a hospital bed smiling, holding a stuffed dog toy, and touching foreheads with their father, who is kneeling on the floor and leaning on the bed.

Children with cancer need to know they are loved, supported, and surrounded by people who care about them.

Importance of honesty and openness

Honesty and openness with your child will build trust and strengthen your relationship. It might be tempting to avoid telling your child that they have cancer. It is natural to want to protect children from anything difficult.

But children are observant. Even if it looks like they are not paying attention, they watch their parents, care team members, and other family members or adults to figure out what is going on. It is likely that during some point your child will hear the word cancer from staff, another hospital peer, or even family and friends. Your child will likely hear the word even if you warn people not to use it.

Many parents report that explaining cancer instead of trying to prevent people from talking about it takes less energy. And it can remove the strain of always trying to maintain defense.

  • It is important to keep the lines of communication open. Even young children can sense when something is wrong. If you do not tell your child what is going on, they will likely make assumptions or use their imagination. Often what they imagine can be worse than the truth.
  • Children tend to blame themselves when something difficult happens to them. They need to know cancer is not their fault.
  • The more your child understands, the less scary things are. Children tend to be cooperative with treatment if they know that it may help them.
  • Honesty will lessen a child’s worry, confusion, and false feelings of guilt.

Plan what to say and how to say it

Practice what you are going to say. This is a difficult conversation. Ask for advice from your child's care team or another parent who has been in a similar position.

The way you share information is also important.

  • Your child will learn a lot from your tone of voice and facial expressions.
  • Stay calm when you talk with your child.
  • Tears are OK, but if they happen, explain why you are crying. You might tell children that it is natural for parents to be sad when their child is sick or that it is normal for people to feel upset when there are many changes. Tears are a way of expressing emotions.
  • It is important to let your child know that they did not cause cancer, and that it is not their fault if people feel sad.
How you talk to your child about his or her cancer diagnosis is important. Stay calm when you talk to your child. In this image, a childhood cancer patient plays a game with her mom.

How you talk to your child about his or her cancer diagnosis is important. Stay calm when you talk to your child.

Decide who will tell your child and when

Many parents receive their child’s diagnosis from the doctor at the same time that their child learns of it. But if you want to be the one to tell your child, the care team can help you decide what to say and how to answer your child’s questions.

Tell children as early as possible. It will help build trust.

When you first talk with your child, consider asking another person to be with you. This person might be another family member or trusted friend who can provide support. It could also be a doctor, nurse, child life specialist, or social worker who can help describe cancer in more detail.

How to explain cancer to a child

Most children and teens have the same basic questions:

  • What is cancer?
  • Why did I get it?
  • Will I get better?
  • What’s going to happen?
  • When can we go home?
  • What about school?

Children need information to manage treatments or procedures, cope with feelings, and have some control over their situation. Most of all, they need to know they are loved, supported, and surrounded by people who care about them.

Trust your instincts. You know your child better than anyone else. You know the best way to tell them. Here are some helpful tips.

  • Give age-appropriate information. Consider talking with a child life specialist at the cancer center. They are experts in child development. They can help you explain cancer using age-appropriate terms based on the child’s developmental stage. They can explain concepts using therapeutic medical play and visual aids. Social workers, psychologists, and chaplains can also provide support.
  • Consider how much information to share at one time. It is usually wise to start with general information. Try not to overload your child with too many details at once. Have several short conversations. A child may have trouble processing too many details. You can share more information over time.
  •  Watch your child for cues. If they change the subject or start looking for distraction, they probably have enough information at that time.
  • Allow their questions to lead the conversation. Feeling safe to ask questions is a great way for them to communicate they want more information and for you to learn which details they want.
  • Help your child understand basic facts about the illness, the treatment, and what to expect.
  • Explain common terms the child will hear often, such as cancer, tumor, chemotherapy, and side effects.
  • Encourage your child to share feelings and ask questions. Answer your child’s questions and have honest, ongoing conversations. This will help your child cope.
  • Know that children are sometimes afraid to ask questions. Watch their reactions to different situations. For example, if children seem upset when they see a child without hair, use that as a chance to ask them about their feelings or if they have any questions.
  • Affirm truths and correct misinformation. Your child may have already formed ideas about cancer based on TV programs or on information heard from family or friends before their own diagnosis. Ask your child what they already know about cancer.
  • Offer hope. The care team is there to help them face cancer. Many treatments are available to help make the cancer go away.
  • Don’t forget siblings. Remember that brothers and sisters need explanations, too.


Father discussing serious matter with son while holding hands on couch.

Children need information so they can process and cope with the situation. They also need to know they are supported and loved.

Common reactions of children to cancer

Each child is different. Their reactions and how they deal with a cancer diagnosis will vary depending on their age, level of development, and personality.

  • Some may react by crying or having angry outbursts.
  • Others may become quiet.
  • Some express their feelings in words; others in actions.
  • Some children return to behaviors they had when they were younger.
  • Every day is different. Children’s schedules, the way they look and feel, and their friendships may all go through changes.
  • Some days will be rough. Others will be smoother.

Children will follow your lead. Try to be calm and reassuring. Find ways to tell and show your children, (including siblings) that you will always be there for them.

Common fears and misconceptions about cancer

There are some common fears that many children have when they learn about cancer. Your child may be scared to talk about these concerns. You may want to bring them up yourself. Use sentence starters such as: Some children think...Have you heard... ?

  • Misconception — Cancer is their fault. It is common for younger children to think that they caused the cancer by doing, saying, or thinking something “bad.” Let your child know that nothing they did, said, or thought caused the cancer. Cancer is not a punishment.
  • Misconception — Cancer is contagious. Explain to your child that people cannot "catch" cancer from someone else. Offer age-appropriate facts about cancer.
  • Misconception — Everyone dies from cancer. You can explain that cancer is a serious illness, but millions of people survive it. If children know someone who has died of cancer, let them know that there are many kinds of cancer. Everyone's cancer is different and has different names and needs different kinds of medicine. You may need to repeat these points many times during your child's treatment.

As you encourage your child to share their feelings and questions, be open and honest about your own feelings and questions.

You can be your child's most important source of information and support. 

How your care team will be involved

Many staff members will be involved in helping your child understand their disease and treatments. A certified child life specialist will probably be part of your care team. They will work closely with your family. They can help your child and their siblings understand about treatment and adjust to treatment and visits to the hospital.

Key points

  • When talking to your child about a cancer diagnosis, use honesty and age-appropriate words.
  • Even though you may want to protect your child from this difficult topic, it is important that your child knows what is happening, so they don’t imagine something worse or worry it is their fault.
  • Your health care team is here to support you. Ask them for help discussing the diagnosis with your child.

Reviewed: February 2023