adhd100
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Notice lasting changes in mood

Recognise when sadness, irritability or loss of interest needs a conversation about help.

Not ratedgeneral health evidence

Start with the time you have

1 minute

Ask yourself: has my mood or enjoyment changed from usual? Then pick the person you could tell.

How sure the science is

Not rated, general health evidence

No pooled trials to rate. This rests on single studies, expert consensus or clinical practice. Measured in the general population; we say so because ADHD trials of this do not exist or are too small.

General NIMH and CDC symptom-recognition guidance, with NIMH evidence that ADHD often co-occurs with other mental disorders.

The number, drawn

at least 2 weeks duration in the description of major depression, not a delay before helpsymptom-recognition threshold, not a self-diagnosis NIMH, Depression

Why it matters

ADHD and depression can happen together, so don't automatically put a change in mood down to ADHD. NIMH describes major depression as depressed mood or loss of interest lasting at least two weeks and getting in the way of daily life. In children it may look like irritability more than sadness. Treat these as reasons to get help, not a checklist for diagnosing yourself or your child.

How to do it

  1. Compare now with your usual: mood, enjoyment, how well you manage ordinary days.
  2. Tell someone you trust what has changed and how long it has been going on.
  3. Take those examples to a health professional, and go sooner if symptoms are severe.

This cannot diagnose depression. For thoughts of suicide, seek help now: contact a crisis line or helpline in your country, and call your local emergency number if anyone is in immediate danger.

Putting it into practice

In real life

  • Things you usually enjoy have felt empty for days and this is affecting daily life.
  • Your child is unusually irritable and has stopped enjoying time with friends.

Watch out for

  • Common mistakeWaiting for visible sadness can miss depression in children, so notice irritability and loss of interest too.
  • Common mistakeTwo weeks is not a waiting rule. Get help sooner for severe symptoms or safety concerns.

Trusted guides

How we rated it

Evidence grade
C Small or mixed studies, expert consensus or clinical practice. Worth knowing, not worth betting on.
The number
Major depression symptoms last at least 2 weeks (NIMH, 2024)
Benefit
65/100 The benefit score is an editorial prioritization for the general list, weighted by certainty. It is not a prediction of what will happen for you.
Effort
Some effort

Sources

Back to the hundred

General information about ADHD, not a diagnosis or an individual treatment plan. Tailoring changes the order of suggestions; it does not assess you. Medication decisions belong with you and a qualified clinician.