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Helping Children When Someone They Know Has Cancer
When a loved one has cancer, children may go through periods of worry, sadness, fear, and uncertainty. However, these emotions might look different in children and teens than in adults.
The way children understand illness depends on their age, their relationship with the person who is ill, and how the adults around them communicate and offer support.
You can help children cope with changes in their lives. Being honest and open with children and teens helps them feel safe, builds trust, and gives them a chance to adjust to changes over time. No matter where your family is on this journey, there are ways to help children cope at every stage.
Talking with a child or teen about cancer
Telling children the truth helps lower the chance they get partial or false information from someone else. It also helps to fill in knowledge from conversations they overhear or do not understand.
Open communication builds trust and gives the child a chance to adjust to changes. Telling the truth is especially important for teens. It is also important to give children space and time to ask questions and express their feelings. This will help them understand what’s going on. And it may help them worry less.
Share the right amount of information
How much you tell children depends on their age, their personality, and their ability to understand the information. The goal is to tell the truth in such a way that children can understand and set expectations. Consider using a children’s or teen book about cancer to guide the discussion. Your local librarian might be able to help you find one. It may be helpful to give children information in small amounts. Check with them as you give more information to see if they understand or have any questions.
Encourage children to ask questions or express their concerns. Knowing what a child is wondering about or doesn’t understand can help you decide what to share.
How to explain cancer to a child or teen
Children of different ages will understand a cancer diagnosis differently. Here are a few things to help you explain what is happening and comfort them.
Explain that cancer is a serious illness
It can be helpful to explain the difference between a common illness, such as a cold or a headache, and a serious illness like cancer. Share what to expect in a way that fits the child’s age and understanding.
Use words children will understand
Children need to know enough to be prepared for what might happen and how it will affect them. Younger children usually need less detail than older kids. However, if it’s someone in the family, most kids of all ages need to know these basics:
- The type of cancer (for example, colon cancer or lymphoma)
- Where the cancer is in the body
- What will happen with treatment
- How treatment might change how the loved one looks and feels
- How the child’s life and routines might change
Provide reassurance
When someone is first diagnosed with cancer, the outlook of the cancer and its treatment may not fully be known. Still, it is important to give a child reassurance. You can assure the child that no matter what happens, someone will always provide care for them. This is especially important if the person with cancer is the parent of the child. If you are helping plan their care, you may choose to share the plan with the child.
Besides the illness itself, children can have other worries about the cancer. A common worry that children have is that something they did or didn’t do might have caused a parent’s or loved one’s illness. Reassure children that they did not cause the cancer.
How children might react
A child’s reaction to the cancer diagnosis of a loved one depends on their age, their relationship to the person diagnosed, and how the information is given to them. Their understanding might also be impacted by past experiences. For example, a child who knows someone who has died from cancer might expect the same thing to happen again.
Remember these things about how children react to changes or worry:
- Children may show you how they feel more than they tell you in words. You might notice your child acting more clingy or needy, worrying more, or acting differently than usual. They might also express themselves through drawing, coloring, or playing.
- Children might regress, or act younger, when they are under stress. For example, a child who was toilet trained might start having accidents. Some children might begin to have separation anxiety or a harder time paying attention in school.
- Children may worry about their loved one dying. Be honest and let them know what’s going on in an age-appropriate way. Let them know you will share updates if things change. Giving truthful information can help them cope well from day to day.
Keep conversations age-appropriate
Children of different ages understand cancer diagnoses differently. Young children may worry they can “catch” cancer or that they may have caused it. Older kids and teens may worry about how the diagnosis will affect their lives or their loved ones’ future. Learning how to share information about the diagnosis, treatment, and side effects honestly and in an age-appropriate way can help children learn what to expect, feel more secure, and feel less afraid.
Helping children and teens cope during treatment
Talk about expected side effects and physical changes
Once treatment starts, the child may see side effects like tiredness, weight changes, hair loss, or vomiting. Seeing these physical changes can be scary for a child.
Children most likely will react to the physical changes treatment causes. Trying to prepare them can help, but it can still be a shock. The way you react will affect the way they do. Remind them about the purpose of the treatment.
Children are often sensitive to how others react, especially their peers, who may ask questions. This may be harder for teens who tend to think about appearance or feeling different. It may be helpful to prepare them for the physical changes and talk with them about how to respond to their friends.
Keep consistent routines
If changes are expected to the usual routine, talk to the children about it. When they know what to expect, they are more likely to cope with changes better. For example, if a parent has cancer, the parent might seek help from a neighbor, friend, or another family member to help take the children to and from school. Or they may ask a trusted person to attend after school programs or activities, such as sports.
During this time, children of all ages may want to help more with household tasks. It’s important to allow children, especially teens, to help. But avoid putting too much responsibility on them at this time. Younger children might want to help too. It may be helpful for them to feel involved.
Reduce stress and family tension
Communication or other problems between parents can add to a child’s stress. This is especially true if parents are separated or divorced. If there are problems, manage them away from the child. Added tension can make it harder for the whole family to get through an already difficult time.
Tips for supporting children
Children younger than age 3
Infants and most very young children will not understand what causes an illness or what to expect during it.
Children of this age are most afraid of separation and feeling abandoned, especially if it’s a parent who has cancer. They’re often sensitive to changes in their routine. If a routine changes, they may become more clingy, and their habits around sleeping, eating, or other daily life may change. Do your best to keep the child’s routine as consistent as possible.
Children ages 4 to 6
Children in this age group likely won’t understand the details of a cancer diagnosis. They might think of being sick as having a cough or cold. They may worry that they can also "catch" cancer.
If it’s the parent who has been diagnosed with cancer, a child this age will likely show more fear and anxiety when away from them.
In times of distress, children at this age might regress. This means they go back to behaviors they have already outgrown, such as no longer being toilet trained. They might also have changes in sleeping patterns and have temper tantrums.
Tips to support young children
Stability and daily structure
- Explain things using simple terms. Focus more on what is happening right now than what will happen in the future.
- Have the child spend as much time as is usual with the parents or a trusted adult who is a regular part of the child’s life, if possible.
- Keep routines as consistent as possible for the child with their loved one.
- Cuddle and hug them often.
- Arrange for reliable daily care if it is a parent or caregiver with the cancer diagnosis.
- Reassure the child that they will always be cared for. This is especially important if it is the parent that has been diagnosed with cancer.
- Reassure the child that cancer is not contagious.
- Reassure children that any emotions or sadness shown by the family is because of the cancer, not anything they’ve done.
- Tell them that the family will get through this difficult time.
Communication and emotional support
- Use play and artwork to help explain what is happening. Children may understand things better when they can see or process this way.
- Set aside time each day, such as bedtime, for the child to ask questions and share feelings.
- Teach your child how to express feelings in safe ways. Set limits on behaviors like biting, hitting, or kicking.
- Connect with the loved one through video, phone, or visits when they are away for care, such as in the hospital or outpatient.
- Talk to the child’s healthcare team about any concerns or changes in the child’s behavior.
If you are a parent with cancer
- If you must be away for care in the hospital or outpatient, video call or call the child on the phone so they can see or hear you when you cannot be home.
- Talk with a social worker or nurse about your own emotions as you manage your child’s distress.
In this age group, children likely have a better understanding of cancer. They may also understand the concept of time better and can think about the future.
They might not tell an adult about any distress they are experiencing. They may be afraid that what they say might upset loved ones.
Tips to support children ages 7 to 12
- Keep the child up to date about their loved one’s illness in simple terms. You may need to repeat the information.
- You can give older children more details about the cancer as it fits their level of understanding.
- Plan time each day with a parent or trusted adult who is a regular part of the child’s life.
- Allow time for children to ask questions and express feelings.
- Arrange for the child to stay in school and continue current routines and other activities as much as possible. Remind the child that it’s OK to have fun.
Get support from the child’s healthcare team or a mental health professional if the child shows severe anxiety, is afraid to go to school, blames themself, acts depressed, or shows low self-esteem.
Teens likely understand the complex parts of a cancer diagnosis and treatment. They also have a better understanding of how the cancer diagnosis can affect a loved one’s future. Because of that, they might worry more.
Teens are highly influenced by their friends and are in the process of developing their own identity. This can impact how they view and react to a loved one’s cancer diagnosis, especially if it’s a parent who has been diagnosed. They might question their future, goals, and health.
Teens experiencing stress or worry might act out, withdraw from friends and family, or feel overwhelmed.
Teens may try to protect parents or loved ones by hiding their sadness, anger, or fears, so it’s important to check in with them regularly. They might ask fewer questions and turn to the internet, social media, or friends as sources of information. They might also try to find ways to help their loved ones.
Tips to support teens
Keep teens updated
- If they are interested, give them information about the loved one’s condition, symptoms, possible side effects of treatments, and what they might expect.
- Update them about what’s happening with the person’s treatment. Answer all questions honestly.
Find social and community support
- Connect them with a support group for teens or families affected by cancer.
- Inform teachers, coaches, and other school staff about the family situation so they can offer support, too.
Maintain stability and routines
- Try to keep life as normal as possible, including in school and after-school activities.
- Encourage them to continue to participate in social groups and activities.
- Reassure them they don’t need to feel guilty spending time with friends and having fun.
Provide emotional support
- Encourage them to share their feelings openly.
- Let them know that feelings of sadness, frustration, and anger are normal.
- Reassure them that it’s OK to ask you questions and express feelings that they think might upset others.
- Address feelings of anger and frustration, even if they are not expressed.
- Be patient if they are reluctant to share thoughts and feelings.
- Encourage the teen to keep a journal or log.
Include the teen in decisions
- If possible, let the teen help decide where to go after school or who should care for them when their parents can’t be there.
- Let teens help with tasks at home, such as cooking meals.
- Make sure to balance responsibilities with their needs.
Finding family and community support
Healthy emotional support for parents and children
Building a support network of families, friends, and other trusted adults can help provide emotional and practical support for both you and your child during this challenging time.
Sometimes, a parent will rely on their child for emotional support when there’s not another adult in the home. This is often not healthy for the child. If a parent or caregiver has a serious illness, it can be very easy for a child to feel they need to support or take care of the parent. It’s important to make sure emotional responsibilities are appropriate for a child’s age and development.
Open communication with children and teens can help them feel reassured and supported. Taking care of them during a loved one’s illness can help them cope with the changes that might occur. But it’s OK if you need support, too. If you feel you need support, consider reaching out to your healthcare team or the child’s care team for resources.
Support for children, teens, and families
Access to a good support network can make a big difference in how families and children cope. Older children, like teenagers, might benefit from joining a support group or talking to other trusted adults.
There are local and national camps or support groups for children whose parents have a cancer diagnosis. Camp Kesem is a national camp that has local chapters. Other support groups might also be available in your area.
If a support network doesn’t exist, talk to a nurse, social worker, chaplain, or clergy member, or case manager about available resources. It might also be helpful to access community-based mentors, such as school counselors, teachers, coaches, scout leaders, or even trusted friends and neighbors.
Support for caregivers
If you are having a hard time with usual parenting responsibilities or coping with changes, it may help you to speak with a counselor or social worker. They might also be able to help you find resources for you and your family.
Financial challenges also are common when faced with a cancer diagnosis. Ask your healthcare team, including your social worker, if there are any resources that might be helpful for your situation.
Support for nontraditional families
Family structures may not all be the same, and some kids may need extra or unique support.
Nontraditional families can include those with adopted or foster children. They can include those with parents who are divorced, separated, single, widowed, or unmarried. They can also include those with parents who are LGBTQIA+. There are many support resources for families that can provide safe and caring environments with others that have similar experiences. If you would like help finding these resources, talk to your cancer care team.
Support from other caregivers or school
Parents or loved ones can choose to share some information about the cancer diagnosis and treatment with their child’s caregivers or school. Be sure to tell the child you plan to do this to give them a chance to share their thoughts and prepare.
Consider talking with your child’s teacher or guidance counselor. You don’t have to tell them everything about the illness, just enough to help them understand what your child is going through. If your child is having trouble, school staff will probably notice changes in their behavior or performance. Having this information will help them support the child.
It can help to talk with the child about what they feel comfortable sharing on social media about the cancer diagnosis. You might also prepare them for questions from others about their loved one’s illness. Help them practice simple responses they can use if they don’t want to share much. This can make questions easier to handle.
- Written by
- References
The American Cancer Society medical and editorial content team
Our team is made up of doctors and oncology certified nurses with deep knowledge of cancer care as well as editors and translators with extensive experience in medical writing.
American Society of Clinical Oncology (ASCO). How a child understands cancer. Accessed at cancer.net. Content is no longer available.
Centers for Disease Control and Prevention (CDC). 2025. Helping children cope with emergencies. Accessed at https://www.cdc.gov/children-and-school-preparedness/before-during-after/?CDC_on March 23, 2026.
Christianson C, Stein E, Farner H, Mehler S, Batchelor E, Reeves C, et al. Managing conflicting prognostic communication preferences in pediatric oncology. JAMA Netw Open. 2026;9(3):e262793.
Kentor RA, Hoodin F, Byrd M, Kullgren KA, LaLonde L, Benkoske L, et al. Parent-to-child information disclosure in pediatric oncology. Pediatr Blood Cancer. 2026;73(3):e70098.
Last Revised: May 12, 2026
American Cancer Society medical information is copyrighted material. For reprint requests, please see our Content Usage Policy.
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