There are few situations more unsettling than wondering whether someone you care about might be thinking about suicide.

Sometimes the concern follows something explicit. They may have spoken about wanting to die, said that others would be better off without them, or disclosed thoughts of suicide. At other times, there is no single statement or event. Something has simply changed. They have become withdrawn, unusually hopeless, more reckless, or unlike themselves in a way that is difficult to dismiss.

This puts family members and friends in a difficult position. You may be genuinely worried while also wondering whether you are overreacting. You may be afraid of asking about suicide in case you make things worse. And if you do ask, you may worry that you will then be responsible for deciding how serious the situation is.

Much of the difficulty comes from believing you need certainty before you are entitled to act.

You don’t.

You can notice something without knowing exactly what it means. You can ask about suicide without assuming someone is suicidal. And you can seek help without first conducting your own assessment of how likely someone is to act.

Your role is not to predict the future. It is to take reasonable concern seriously.

Concern often comes before certainty

There is no single behaviour that tells you whether someone is suicidal.

Sometimes there are recognisable warning signs: increasing hopelessness, withdrawing from people, talking about being a burden, increased alcohol or drug use, giving away meaningful possessions, talking about death or suicide, or making preparations associated with a suicide plan.

But concern does not always arrive as a neat collection of warning signs.

Often, the thing that catches your attention is change.

Someone who normally answers your calls stops responding. A person who usually talks about the future suddenly seems indifferent to it. Someone becomes markedly more withdrawn, agitated or hopeless. Or perhaps nothing is dramatic enough to explain on its own, but you know the person well enough to recognise that something is different.

It is reasonable to pay attention to that.

You do not need to establish that someone is suicidal before checking whether they are okay.

Asking is different from assessing

This distinction matters.

You can ask someone about suicide without taking responsibility for assessing their suicide risk.

When people are frightened of what the answer might be, they sometimes approach the subject indirectly:

You’re not going to do anything silly, are you?

You’re not thinking of hurting yourself or anything?

Questions like these are understandable, but they can unintentionally communicate the answer you hope to hear.

If you are concerned about suicide, it is okay to use the word.

You might say:

“I’ve noticed you haven’t seemed like yourself lately and I’m worried about you. Have you been thinking about suicide?”

Asking someone directly about suicide does not put the idea into their head. Australian suicide-prevention services, including Lifeline and Suicide Call Back Service, recommend asking directly when you are concerned.

The purpose of the question is not to interrogate them. It is to make it possible for them to tell you what is happening.

If they say yes

Hearing someone you care about say that they have been thinking about suicide can create an immediate sense that you need to do something.

That urgency can make people start persuading, reassuring, problem-solving or asking question after question.

Often, a better first response is simpler:

“I’m really glad you told me. I don’t want you to deal with this alone.”

Listen.

Try not to debate whether their situation is really as hopeless as it feels to them. Avoid immediately listing reasons they have to live or telling them how devastated other people would be. Those responses usually come from care, but they can move the conversation away from what the person is trying to communicate.

Taking suicidal thoughts seriously does not mean agreeing that suicide is the answer. It means being willing to stay with a difficult conversation rather than needing to make the feeling disappear.

From there, the important issue becomes safety.

If the person has indicated an intention to act, has a suicide plan or timeframe, has access to the means to seriously harm themselves, has recently attempted suicide, says they cannot keep themselves safe, or there is some other reason to believe their life may be in immediate danger, additional help needs to become involved.

If you believe someone’s life is in immediate danger, call Triple Zero (000). If you are with them and it is safe to do so, stay with them while help is arranged.

But notice what you are doing here.

You are not assigning them a clinical risk category. You are asking a practical question:

Is this something I can continue to support them through while we arrange help, or does more urgent help need to become involved now?

That is a much more realistic responsibility for a family member or friend.

What if you don’t know how serious it is?

This is probably one of the most difficult positions to occupy.

The person may acknowledge suicidal thoughts but refuse to say anything more. Their answers may be vague. They may be intoxicated. You may not be physically with them. Perhaps they have stopped answering their phone after saying something concerning.

It is tempting to believe you need to work out exactly what is happening before involving anyone else.

You don’t.

Uncertainty is information too.

If you are unsure what to do, you can seek professional guidance yourself. Suicide Call Back Service is available 24 hours a day on 1300 659 467 and specifically supports people who are worried about someone else. Lifeline is available 24 hours a day on 13 11 14.

You can describe what has happened and ask for help deciding what to do next.

If you believe the person’s life may be in immediate danger, call 000 rather than waiting for certainty.

If you are speaking to the person remotely and become seriously concerned, try to remain connected and establish where they are and whether someone trustworthy is physically nearby. If they are unreachable and you believe there may be an immediate danger to life, emergency assistance may be necessary.

The threshold is not Can I prove something terrible is about to happen?

The question is Given what I know and what I cannot establish, what is the safest reasonable next step?

If they say no

A person telling you they are not suicidal matters.

But it does not mean you have to pretend you were never concerned.

They may genuinely not be experiencing suicidal thoughts while still struggling significantly. Or you may continue to feel uneasy because of changes you have observed.

You do not need to interrogate them until they give you a different answer. Instead, you can keep the relationship open:

“Okay. I hear you. I’m still a bit worried because you haven’t seemed yourself lately. I’m not going to pressure you, but I do want to stay close and check in again.”

That response does something important. It accepts what they have told you without requiring you to ignore what you have noticed.

You can continue checking in, encourage them to speak with their GP, psychologist or another appropriate support, and seek advice yourself if your concern remains strong.

A conversation about suicide does not have to end with either they’re safe or this is an emergency. There is a large space between those two positions in which people can remain connected and support can be brought closer.

Caring does not mean carrying this alone

When someone you love may be suicidal, responsibility can expand very quickly.

You may begin monitoring their mood, checking whether they are responding to messages, watching their behaviour, trying to interpret every change, or feeling that you need to remain constantly available.

You may also be asked to keep suicidal thoughts secret.

You should not promise secrecy when someone’s safety may require other people to become involved.

Where possible, this can be handled collaboratively rather than as a threat:

“I don’t want to take control away from you. But I care about you too much to carry this by myself. Let’s work out who we can involve.”

There is an important difference between supporting someone and becoming solely responsible for keeping them safe.

You can listen. You can stay with them. You can help them contact a GP, psychologist, crisis service or trusted person. You can make the call when an emergency requires it.

But you do not have to become their therapist, crisis service and entire safety system.

Sometimes the most responsible thing you can do is recognise that the situation has become bigger than what one relationship can safely contain.

Work through what to do next

When you are frightened about someone, even relatively simple decisions can become difficult.

The Concerned Someone May Be Suicidal? interactive guide is designed to help you work through the immediate situation one step at a time.

It does not calculate a suicide-risk score, diagnose the person or tell you that they are “safe.” Instead, it helps you consider whether there may be an emergency, whether you can speak with the person, how to ask directly about suicide, and when urgent or professional support should become involved.

If someone’s life is in immediate danger, call Triple Zero (000).

For 24/7 support in Australia, contact Lifeline on 13 11 14 or Suicide Call Back Service on 1300 659 467. You can contact Suicide Call Back Service yourself when you are worried about someone else.

You are allowed to take your concern seriously

One of the hardest parts of worrying about someone who may be suicidal is that you rarely have complete information.

You are trying to understand another person’s internal world from what they say, what they do and what you have noticed changing.

That uncertainty can create a trap:

I don’t want to overreact, so perhaps I should wait until I’m more certain.

But certainty is not the threshold for caring.

You can ask about suicide without assuming someone is suicidal. You can seek advice without deciding that an emergency exists. And you can call emergency services when you genuinely believe someone’s life may be in danger without first proving that belief to yourself.

Your job is not to predict what another person will do.

It is to notice when something concerns you, be willing to ask a difficult question, listen to the answer, and involve more support when the situation is bigger than you can safely hold alone.

“I’m worried about you, and I’d rather ask than assume you’re okay.”