Hoarding

What is hoarding disorder?

Hoarding disorder is characterised by persistent difficulty discarding possessions, regardless of their actual value. This leads to an accumulation of items that clutters living spaces and significantly affects the safety and use of those spaces. The difficulty is accompanied by distress at the idea of getting rid of things, and the accumulation causes clinically significant impairment in daily life.

Hoarding disorder is distinct from collecting. Collectors organise their items, take pride in them, and their collections do not impair daily functioning. Hoarding involves disorganisation, distress, and a loss of control over the accumulation.

Hoarding affects approximately 2-5% of the general population.

Hoarding and neurodivergence

ADHD and hoarding

The link between ADHD and hoarding is significant. Research shows that around one in five adults with ADHD display clinically significant hoarding symptoms - roughly four times the rate in the general population.¹

Importantly, the connection runs specifically through inattention rather than hyperactivity or impulsivity. Inattention is the only significant predictor of hoarding severity in ADHD populations. This makes sense when you consider what hoarding requires you to do: sorting, categorising, making decisions about individual items, sustaining attention through a repetitive task, and following through on the plan to discard. Every one of these steps relies on executive functions that ADHD impairs.¹

For many people with ADHD, the clutter is not about wanting to keep everything. It is about the cognitive cost of sorting and deciding. Every item requires a decision - keep, discard, donate, relocate - and when decision-making is already effortful, the easiest option is to put it down and deal with it later. Over time, “later” becomes “never”, and the accumulation grows.

Autism and object attachment

The relationship between autism and hoarding is different from the ADHD pattern, and more nuanced.

Autistic people may develop intense attachments to specific objects for reasons that are not captured by standard hoarding models. Objects may provide sensory comfort (a particular texture, weight, or visual quality), they may be connected to special interests, or they may represent predictability and consistency in a world that often feels unpredictable.

Research has found that approximately 34% of children with autism and co-occurring anxiety or OCD show moderate hoarding behaviours. However, some of what looks like hoarding may be better understood as part of autism itself - sensory attachment, restricted interests, or a strong need for sameness - rather than a separate hoarding disorder.²

The distinction matters for treatment. Asking an autistic person to discard objects that provide genuine sensory comfort or emotional regulation is not the same as helping someone overcome hoarding disorder. Good assessment considers whether the accumulation causes distress and impairment, or whether it is a functional part of how the person manages their environment.

OCD and hoarding

Hoarding can also occur as part of OCD, where the difficulty discarding items is driven by intrusive thoughts. For example, a person might be unable to throw away newspapers because of an intrusive thought that they will need the information later and something terrible will happen if they do not have it.

OCD-related hoarding is driven by anxiety and intrusive thoughts. ADHD-related hoarding is driven by executive dysfunction. Autism-related accumulation may be driven by sensory attachment or restricted interests. These distinctions are important because they lead to different treatment approaches.

Treatment

For ADHD-related hoarding

The most effective approaches work with the executive function difficulties rather than against them.

ADHD medication - stimulant medication improves executive function and there is some evidence that this can reduce hoarding symptoms. For some people, medication makes it possible to engage with sorting and organising tasks that were previously overwhelming.

External structure - because the difficulty is cognitive rather than emotional, external supports can make a significant difference. Labelled storage systems, visual reminders, consistent locations for categories of items, and a “one in, one out” rule can all help manage accumulation.

Task breakdown - breaking the overwhelming task of decluttering into very small, achievable goals. Not “clear out the spare room” but “sort one drawer for ten minutes.” Small, time-limited tasks are easier for ADHD brains to initiate and complete.

Body doubling - having someone present while you sort can help sustain attention and motivation. The other person does not need to help - their presence alone can make the task more manageable.

For autism-related hoarding

Respect the function - before treating accumulation as a problem, assess whether the objects serve a genuine function (sensory regulation, comfort, connection to interests). If they do, the goal may not be to eliminate the collection but to manage it in a way that allows safe and functional use of living space.

Advance planning - any decluttering should be planned well in advance, with clear expectations about what will happen. Surprises and forced discarding can be deeply distressing and counterproductive.

Sensory alternatives - if objects need to be discarded, offering alternative sensory input can ease the transition. Photographs of discarded items can also help some people.

For OCD-related hoarding

Exposure and response prevention (ERP) - the gold-standard OCD treatment - targets the intrusive thoughts and anxiety that drive the inability to discard. This is a different approach from ADHD-focused or autism-focused interventions.

Therapy

CBT adapted for hoarding can address the thoughts and beliefs that maintain hoarding behaviour (such as beliefs about the importance of possessions, fears about waste, or perfectionism about organisation). For neurodivergent people, CBT needs adapting to account for executive function difficulties and sensory needs.

When to seek help

Hoarding becomes a clinical concern when:

• living spaces cannot be used for their intended purpose (a bed that cannot be slept in, a kitchen that cannot be cooked in)
• the accumulation creates health or safety risks (fire hazards, pest infestations, blocked exits)
• the person is distressed by the situation but unable to change it
• relationships, work, or social life are significantly affected

If you recognise these patterns, speaking to your GP is a good starting point. They can refer you to specialist services for assessment and treatment.

Further reading on neurobetter

• Mental health conditions - overview
• OCD
• ADHD
• Autism
• Executive functioning

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