For parents

OCD in children and teenagers

OCD in children and teenagers is treatable, and it responds to a specific therapy done properly. If reassurance, rituals and ‘just one more time’ have taken over your family’s evenings, this page explains what is happening and what changes it.

What OCD looks like in a child

Younger children may not be able to describe the thought at all, only a feeling that something is wrong and must be put right, so what you see is behaviour. Parents often notice questions that need answering again in exactly the same words, bedtime routines that have grown extra steps, homework rubbed out and redone, or sudden anger when a ritual is interrupted, which is usually fear. Common themes are harm coming to a parent, contamination and illness, and things feeling “just right”. Teenagers often have violent, sexual or blasphemous thoughts that horrify them, and may hide them for years.

The reassurance loop

1. Trigger: Hearing that a classmate was sick
2. Obsession: What if I get ill and die?
3. Feeling: Fear, and a doubt that will not settle
4. Compulsion: Asking a parent again and again if they will be OK
5. Parent steps in: Says yes, checks their temperature, calms them
6. Then back to the first step, and the loop runs again.
7. Other situations that now set it off too: Any story about illness, A cough at school, bedtime, A visit to a relative.

Where treatment steps in. Your child practises facing the trigger without the ritual, in steps they have agreed, and you learn to respond with support rather than the answer. They learn that they can cope with the worry without it.

New triggers. Over time, more situations become linked to the trigger and start the loop off too.

What the treatment is

The treatment with the strongest evidence for childhood OCD is exposure and response prevention (ERP), a specific form of CBT, and NICE recommends it as the first-line psychological treatment for OCD in children and young people. We map what sets the OCD off and what your child does to make the feeling stop, and your child then practises situations on a list without doing the ritual, starting with a manageable step. The anxiety rises and often eases, and even when it does not, your child learns that they can get through the feeling and the uncertainty without the ritual. That is the main thing treatment teaches, and finding that the feared thing did not happen comes second.

With a nine-year-old this involves games, competitions and sticker charts, with the OCD treated as a bully to be beaten. With a sixteen-year-old it looks more like adult treatment, with the young person setting their own targets. We agree the steps together in advance and they become easier with practice. Most of the change happens between sessions, so much of what I do is coaching parents on what to say when the question comes for the fourth time and how to reduce accommodation calmly.

When OCD arrives alongside tics, autism or ADHD

A substantial minority of children with OCD also have tics. I do not treat tics, though I will treat OCD alongside them. In autistic children I take care to tell a compulsion driven by fear from a routine the child values, and ADHD changes how ERP is delivered.

Sudden-onset OCD (PANS and PANDAS)

Most OCD in children builds up over months. Occasionally it appears over a few days, sometimes after a sore throat or another infection, and parents can often name the week. Other changes often arrive at the same time, such as a sudden refusal to eat, severe separation anxiety, rages, bedwetting in a child who had been dry, tics, or handwriting that suddenly gets worse. A written timeline and a note of recent illnesses will help the doctors.

PANS (paediatric acute-onset neuropsychiatric syndrome) is a description proposed by researchers for an abrupt onset of OCD or severely restricted eating together with at least two other new difficulties, not better explained by another medical condition (Chang and colleagues, 2015). PANDAS is an older, narrower term for cases thought to be linked to a streptococcal infection, the bacteria behind strep throat. There is no single test for either, treatments aimed at infection or the immune system have been studied only in small trials with mixed results, and in November 2024 NICE concluded that there was insufficient evidence in this area to develop useful guidance.

At the time of writing, in September 2026, there is no official NHS guidance on diagnosing or treating PANS or PANDAS, as a House of Commons Library briefing published in June 2026 set out. A PANS Clinical Guideline Development Group, working with the guidelines team at the Royal College of Paediatrics and Child Health, began work in April 2024. NICE agreed in January 2026 to work with the group through its guideline collaboration programme, and the charity PANS PANDAS UK (opens in a new tab), which also runs support groups for parents, has said that publication is expected in late 2026.

I do not diagnose PANS or PANDAS, order tests, or advise on antibiotics, steroids, immune treatments or supplements, which are decisions for your child’s doctors. Once the medical assessment is under way, I treat the OCD and anxiety with CBT including ERP alongside any medical care, because the obsessions and compulsions work in the same way whatever started them. I pace the work to how your child is, slowing down during a flare. The evidence specific to this group is limited. In a small study of seven children with OCD linked to PANDAS, six were rated as having responded after a three-week intensive course of CBT, and three of those six still met that standard at three months (Storch and colleagues, 2006).

Sources

• Peris, T. S., Bergman, R. L., Langley, A., Chang, S., McCracken, J. T., & Piacentini, J. (2008). Correlates of accommodation of pediatric obsessive-compulsive disorder: Parent, child, and family characteristics. Journal of the American Academy of Child and Adolescent Psychiatry, 47(10), 1173-1181. doi.org/10.1097/CHI.0b013e3181825a91 (opens in a new tab)
• Chang, K., Frankovich, J., Cooperstock, M., et al. (2015). Clinical evaluation of youth with pediatric acute-onset neuropsychiatric syndrome (PANS): recommendations from the 2013 PANS Consensus Conference. Journal of Child and Adolescent Psychopharmacology, 25(1), 3-13. journals.sagepub.com (opens in a new tab)
• Storch, E. A., Murphy, T. K., Geffken, G. R., et al. (2006). Cognitive-behavioral therapy for PANDAS-related obsessive-compulsive disorder: findings from a preliminary waitlist controlled open trial. Journal of the American Academy of Child and Adolescent Psychiatry, 45(10), 1171-1178. sciencedirect.com (opens in a new tab)
• House of Commons Library (2026). PANS and PANDAS. Research briefing CBP-10493. commonslibrary.parliament.uk (opens in a new tab)
• PANS PANDAS Steering Group. PANS clinical guideline development. theppsg.org.uk (opens in a new tab)
• PANS PANDAS UK (2026). NICE collaborating with the PANS Guideline Development Group. panspandasuk.org (opens in a new tab)

Common questions

Written by Dr Daniel O’Rourke, PhD, ABPP, CPsychol, HCPC-registered Clinical Psychologist Last reviewed: September 2026