When one child in a family is facing cancer, siblings are affected too.
They may not be receiving treatment, but they are still living through changes in routines, attention, emotions, and family life.
They may feel scared for their brother or sister.
They may feel guilty for being healthy.
They may feel jealous of the attention being given to the child who is sick.
They may also feel confused, overlooked, angry, protective, or unsure how to talk about what is happening.
These feelings can be difficult for children to understand, especially when they believe they should only feel sad or supportive.
Helping siblings feel included means reminding them that their feelings matter, their needs have not disappeared, and they are still an important part of the family.
Explain What Is Happening Honestly
Children often notice more than adults realize.
They may hear conversations, see worried faces, or notice that family routines have changed.
When they do not receive clear information, they may create their own explanations.
Use honest, age-appropriate language to explain:
- What cancer is
- What treatment may look like
- Why their sibling may feel tired or look different
- Why the family may need to travel
- Why routines may change
- What will remain the same
- Who will care for them during appointments
Let them know it is okay to ask questions more than once.
Reassure Them That They Did Not Cause It
Young children may believe their thoughts, arguments, or behaviour somehow caused the illness.
Tell them clearly:
“You did not cause this.”
“Nothing you said or did made your sibling sick.”
“You cannot catch cancer from being close to them.”
These reassurances may need to be repeated.
Make Space for Complicated Feelings
Siblings may feel many emotions at the same time.
They may love their brother or sister deeply and still feel jealous.
They may be frightened and also frustrated.
They may feel guilty for enjoying themselves while their sibling is in treatment.
These feelings do not make them uncaring.
They make them human.
You can say:
“It is okay to feel sad and angry.”
“It is okay to wish things were normal.”
“It is okay to have fun.”
“You can love your sibling and still feel frustrated.”
Children need permission to be honest without fear of disappointing the adults around them.
Do Not Expect Them to Be Strong All the Time
Siblings may hear comments such as:
“You need to be brave.”
“Your parents have enough to worry about.”
“You need to help out more now.”
While some added responsibility may be necessary, children should not feel that they must hide their needs.
They are still children.
They should not be expected to become caregivers, parents, or emotional support for adults.
Keep Their Routines as Steady as Possible
Familiar routines can provide security during an uncertain time.
Try to maintain:
- School attendance
- Sports and activities
- Bedtime routines
- Time with friends
- Family traditions
- Favourite meals
- One-on-one time with trusted adults
Not every routine will remain unchanged, but preserving some normalcy can help siblings feel grounded.
Make Time for One-on-One Attention
Siblings may understand why the child with cancer needs more attention, but they may still miss time with their parents.
Even a short period of focused attention can matter.
This could include:
- Reading together
- Going for a drive
- Having a snack together
- Attending an activity
- Talking before bed
- Going for a walk
- Watching a favourite show
The important part is letting the child feel seen without having to compete for attention.
Include Them in Age-Appropriate Ways
Siblings may want to help.
Giving them small, manageable roles can help them feel connected.
They might:
- Draw a picture
- Choose a book for the hospital
- Help pack a treatment bag
- Make a card
- Pick a comfort item
- Choose a family movie
- Help decorate a basket
- Record a voice message
Participation should always be optional.
They should not feel responsible for making their sibling better.
Offer Small Choices
Cancer can make children feel powerless.
Giving siblings choices can help restore a sense of control.
For example:
“Would you like to visit today or send a drawing?”
“Would you like to talk about it or do something fun?”
“Would you like to help choose a blanket?”
Small choices can help them feel involved without being overwhelmed.
Let Them Have Fun Without Guilt
Siblings may feel guilty laughing, playing, attending activities, or celebrating milestones while their brother or sister is sick.
Tell them that joy is still allowed.
They should continue:
- Seeing friends
- Playing sports
- Celebrating birthdays
- Going to school events
- Enjoying hobbies
- Laughing
- Having ordinary childhood experiences
Enjoying life does not mean they care any less.
Watch for Changes in Behaviour
Children may communicate distress through behaviour rather than words.
You may notice:
- Trouble sleeping
- Anger
- Withdrawal
- Clinginess
- Difficulty concentrating
- Changes at school
- Headaches or stomach aches
- Increased worry
- Acting younger than usual
- Risk-taking in older children
These changes may show that the child needs additional support.
A school counsellor, family doctor, social worker, or therapist may be helpful when concerns continue.
Keep the School Informed
With the family’s permission, let the child’s teacher or school counsellor know what is happening.
The school may be able to provide:
- Emotional check-ins
- Flexibility with assignments
- A quiet place
- Support during difficult days
- Awareness of changes in behaviour
- Help maintaining routines
Older children should have a say in what information is shared.
Avoid Comparing Siblings
Each child may respond differently.
One may want to talk often.
Another may avoid the topic.
One may become more helpful.
Another may become angry or withdrawn.
Do not compare their reactions.
There is no single correct way to respond to a sibling’s cancer diagnosis.
Support each child according to their personality, age, and needs.
Include Something Just for Them
A small comfort item can remind a sibling that they have not been forgotten.
Ideas include:
- A colouring book
- A small toy
- A journal
- A book
- A craft kit
- A snack
- A family game
- A soft blanket
- A gift card
- A handwritten note
The item does not need to be equal in size or value to the patient’s basket.
Its purpose is simply to say:
We see you too.
Create a Sibling Comfort Basket
A sibling comfort basket might include:
- One activity
- One comfort item
- One book
- One small personal gift
- A journal or drawing pad
- A family photograph
- A note of reassurance
- A shared game
- A favourite snack, when appropriate
The basket should reflect the sibling’s age and interests.
Give Them a Safe Person to Talk To
Some children may not want to share all of their feelings with their parents because they do not want to add more stress.
A trusted adult can provide another safe place to talk.
This may be:
- A grandparent
- An aunt or uncle
- A teacher
- A coach
- A family friend
- A counsellor
- A spiritual leader
- A healthcare social worker
Let the child know they are not betraying anyone by talking honestly.
Do Not Make Them Responsible for Updates
Siblings should not be expected to explain the diagnosis to classmates, relatives, or community members.
Give them simple words they can use if they choose to respond:
“My sibling is getting treatment right now.”
“I do not want to talk about it today.”
“My family will share updates when we are ready.”
They have the right to privacy too.
Prepare Them for Changes in Appearance
Treatment may cause visible changes such as hair loss, weight changes, scars, medical equipment, or fatigue.
Explain these changes before the sibling sees them whenever possible.
Knowing what to expect can reduce fear.
Use simple language and give them space to ask questions.
Support Their Relationship With the Child in Treatment
Help siblings stay connected in ways that feel natural.
They might:
- Read together
- Play a simple game
- Watch a show
- Exchange drawings
- Make video calls
- Share jokes
- Listen to music
- Sit quietly together
Their relationship does not need to become centred entirely on cancer.
They are still siblings.
Remember Their Milestones
The sibling’s birthdays, school events, sports, achievements, and special moments still matter.
Cancer may make it harder to celebrate in the usual way, but acknowledging these milestones can help prevent the sibling from feeling invisible.
Even a small celebration can say:
Your life still matters too.
Support Them After Treatment
When treatment ends, siblings may still have questions, fear, or difficulty returning to normal.
They may worry about recurrence.
They may have become used to new roles or routines.
Continue checking in.
Do not assume that everything feels normal again immediately.
Support Them Through Grief
When a child dies, siblings need long-term support.
They may grieve differently from adults and may revisit the loss at different stages of development.
Help them:
- Speak their sibling’s name
- Share memories
- Ask questions
- Participate in memorial traditions
- Express emotions through art or play
- Maintain routines
- Receive professional support when needed
Do not expect them to grieve on anyone else’s timeline.
Every Child in the Family Matters
When one child has cancer, it is understandable that much of the family’s energy goes toward treatment and care.
But siblings should not disappear in the process.
They need honesty.
They need attention.
They need normalcy.
They need permission to feel difficult emotions.
They need to know they are still loved, still important, and still part of the circle of care.
The Glen Adnam Cancer Comfort Basket Foundation believes support should include the whole family.
Because siblings are walking through cancer too.
And they deserve to feel seen, included, and supported every step of the way.
