Improved awareness of the condition has likely contributed to people seeking help, say experts - but, according to charities and many of those with OCD, societal problems, combined with the pressure of social media, are the main driver for the reported rise.
Leigh Wallbank, chief executive of charity OCD Action, describes many young people's lives as a "pressure pot".
"They're facing financial issues, educational issues, global issues - the environment is such a big issue," she tells us. "I think of them living in this pressure pot, and then underneath that, giving heat to this pressure pot, is social media."
The Covid-19 pandemic also played a part, says Minesh Patel, associate director of policy and influencing at the mental health charity, Mind.
The pandemic put a "particular and unique strain" on people with OCD, with disruption to routine, an inversion of social norms and a hyperfocus on hygiene, he says.
"Barriers to social interaction, including treatment and support services, meant that many coping mechanisms were disrupted or unavailable for an extended period of time," he adds.
NHS help for OCD patients includes specialist talking therapy called Cognitive Behavioural Therapy (CBT) - which can include Exposure and Response Prevention (ERP).
Through ERP patients are helped to manage their anxiety by gradually being exposed to their fears, while preventing them from performing their usual compulsive behaviours.
Medication is also offered - usually a type of antidepressant.