Two shifts in childhood OCD and body dysmorphic disorder are worth paying attention to. Several environmental risk factors long taken for granted may be less directly causal than once assumed. And the bottleneck in helping young people seems to lie less in what works than in who can reach it.
Familiar disorders, less familiar questions
For most clinicians working with children and adolescents, OCD is a familiar disorder. Body dysmorphic disorder (BDD) is recognised more often now, although it is still easily missed. Both conditions are well described, their first-line treatments long established, and the value of early intervention rarely questioned. So what is there left to say?
Quite a lot, as it turns out. What has shifted is not so much the treatments themselves, but the way the field thinks about where these disorders come from, alongside a growing recognition that having effective treatments available in theory is very different from young people actually being able to access them.
What recent evidence is actually saying about causes
For many years, explanations for OCD in young people tended to focus on specific life events or experiences. Clinicians and families often looked to factors such as complications around birth, childhood infections, parenting styles, bullying, or traumatic experiences when trying to understand why symptoms appeared. In the clinic, parents commonly ask whether something during pregnancy or an illness early in life may have contributed to the onset of their child’s OCD.
What recent evidence suggests, however, is a more complicated and less linear story.
Genetically informed studies from large Scandinavian registers are quietly rewriting parts of this conversation. OCD is moderately heritable, with twin estimates around 40–50%. Once shared family factors are controlled for through sibling comparison and other quasi-experimental designs, several classic risk factors shrink. The link between early childhood infections and later OCD, for example, appears largely explained by shared familial liability rather than the infection itself. Perinatal events do retain a small genuine signal, and violent victimisation seems associated with later OCD even within sibling comparisons. Many “causes” once spoken about confidently may turn out to be markers of vulnerability.
This changes the way these conversations happen in the clinic. Rather than looking for one specific event that directly caused the OCD, the picture is usually more complex, involving underlying vulnerability and the interaction between genetic and environmental factors. For parents who feel guilty about pregnancy, infections, or their parenting, understanding that complexity can sometimes bring a sense of relief.
The gap between effective treatment and real-world care
CBT with exposure and response prevention remains the first-line psychological treatment for paediatric OCD, with SSRIs considered for moderate-to-severe cases. Less often discussed is a more practical problem: in many parts of the world, specialist treatment is difficult to access at all.
Recent trials of internet-delivered CBT (ICBT) suggest that a stepped-care approach using therapist-guided ICBT first can achieve outcomes comparable to in-person CBT at six months while using substantially less therapist time. Around half of children may never need to step up to face-to-face treatment. Early feasibility studies in adolescents with BDD suggest a similar approach may be possible there too, although the evidence base remains smaller and ICBT is not a substitute for specialist care in more complex cases. For adolescents who never reach a clinician, scalable forms of treatment may be one of the few realistic ways to narrow the gap.
The case of BDD
Adolescent-onset BDD is more common than many clinicians assume, particularly among girls, and carries a striking burden: high rates of social impairment, school non-attendance, self-harm, and elevated suicide risk. Recent population-level data suggest intentional self-harm is several times more common in BDD than in matched controls and that for many the first recorded self-harm event precedes the diagnosis. Underrecognition has familiar drivers: secrecy, shame, low insight, and easy misattribution to “normal teenage self-consciousness” or to comorbid depression, anxiety, or eating disorders. Without direct questions about appearance preoccupations, repetitive checking, grooming, distress, and impairment, the diagnosis could be missed.
What this means in practice
Three quiet shifts seem worth holding in mind:
- Causal language around environmental risk factors in OCD may require more caution than it once did. Framing these disorders in terms of vulnerability, interplay, and uncertainty often serves families better than confident attributions.
- Where stepped care and digital pathways are available, they function as a realistic route into evidence-based care, rather than a second-best option.
- BDD rarely announces itself openly, particularly in adolescents, and the cost of missing it can be high.
Closing thoughts
Taken together, these developments subtly change the clinical picture around childhood OCD and BDD. The shift is not dramatic enough to overturn existing practice, nor does it challenge the foundations of good care: careful assessment, ERP-based CBT, judicious medication use, and family involvement remain central.
What does seem to be changing is how clinicians think about these disorders more broadly. There is growing caution around simple explanations for why OCD develops, greater awareness of how difficult it can be for families to access evidence-based treatment, and increasing recognition that BDD in adolescents is often missed despite significant distress and impairment.
The next major gains may not come from entirely new treatments. They may come from getting better at recognising vulnerability, asking better questions, and making effective care easier to reach.
ACAMH Resources
FREE CPD/CME certificates when you watch/listen to any of this content from ACAMH Learn.
OCD and Me – This film features Olivia’s powerful account of living with OCD from childhood, exploring both the compulsions people see and the intrusive thoughts they don’t. Her story sheds light on the hidden challenges and misconceptions surrounding OCD.
Talk: 15 mins. Level: Introductory
Parenting A Child With OCD Kitty, co-founder of the Charity Nip in the Bud shares her personal story of parenting a child with OCD in a time with limited awareness, prevalent stigma and little resources.
Talk: 6 mins. Level: Introductory
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