ADHD, anxiety, bipolar disorder, and other conditions can share symptoms such as distractibility, restlessness, or impulsive behaviour. Clinicians distinguish them by examining the full pattern, including onset, duration, associated symptoms, and changes over time. A person can also have more than one condition.

A restless evening is an event. A lifelong tendency to be restless is a history. A sustained change in sleep, energy, and behaviour is another kind of pattern. The same word, restless, can appear in all three without explaining any of them.

The order of events matters: what started when, and what came next?

A symptom list is missing its time axis

Imagine saying, “I cannot concentrate.” That statement could describe being pulled away by surrounding activity, being occupied by worry, feeling slowed by depression, or being exhausted after repeated nights of poor sleep.

The experience is real in each case. The cause and appropriate treatment may differ.

The Royal College of Psychiatrists’ adult ADHD guidance1 stresses the importance of longitudinal history when distinguishing overlapping conditions. It also recognises that conditions may coexist.

A good question is therefore not only “Do you experience this?” It is “When did this begin, what tends to accompany it, and is it present between difficult periods?”

ADHD and anxiety can interact

If worry occupies your attention, following a conversation can become difficult. If longstanding attention difficulties repeatedly lead to missed obligations, those consequences can themselves become a source of worry.

An assessment needs to consider both possibilities, as well as the possibility of independent ADHD and anxiety. It is too simple to say that anxiety always hides ADHD, or that treating one will always remove the other.

Describe the experience in ordinary terms.

  • Does your attention get caught by a specific fear?
  • Does it wander even when you feel calm?
  • Have organisation problems existed since childhood?
  • What changes when the worry is less intense?

These questions help organise a clinical conversation. They are not a home diagnostic test.

Bipolar disorder requires more than moodiness

ADHD and bipolar disorder should not be distinguished with a rule such as “ADHD is fast mood swings and bipolar is slow mood swings.” That leaves out too much.

A clinician considers episodes and the broader changes that accompany them, including sleep, energy, activity, judgement, and mood. Brief frustration or an impulsive purchase does not establish bipolar disorder. Having ADHD also does not prevent someone from developing a mood disorder.

If there is a marked new change in energy, sleep need, behaviour, or judgement, seek prompt clinical advice rather than treating it as routine ADHD. Severe symptoms or immediate danger call for urgent local help.

Four diagnoses do not automatically mean four mistakes

When several diagnoses have been suggested, it is worth checking the history and reasoning behind each one.

The number of diagnoses alone tells us little. Some people have several accurately identified conditions. Others have been given different explanations at different times without anyone reviewing the whole picture.

Bring previous reports if available. Ask the clinician which difficulties each diagnosis explains, where there is overlap, and what remains uncertain. The aim is a coherent care plan, not winning an argument about which label is the real one.

What to record before an appointment

A brief timeline can include when a problem first appeared, whether it is continuous or comes in periods, and what changed around the same time. Note sleep, medications, substance use, illness, and major life events where relevant.

Include periods of better functioning. What was different: fewer demands, better sleep, effective treatment, more structure, or something else? Do not assume the explanation in advance.

You can say, “I think ADHD might explain some of this, but I want the other possibilities considered.” That is a clear request for a careful assessment.

Recognising yourself in a description can be useful. Understanding the sequence of your own life is usually more useful than collecting descriptions that all sound a little familiar.