OCD - otherwise known as Obsessive Compulsive Disorder - is an anxiety disorder which affects thought and behaviour.
It causes individuals to experience repetitive and intrusive thoughts. These can be mild traits, such as having to put things in a straight line, but in more extreme cases it causes a debilitating dependency on rituals of cleanliness, symmetry or other issues.
Studies in multiple countries suggest that around 2-3 in every 100 people are affected by the illness, from young children to adults, regardless of gender or social or cultural background - even David Beckham has admitted to having the condition.
Some personality types are more susceptible to displaying OCD symptoms - usually those who need things to be neat and tidy and develop obsessive behaviours in times of high stress.
There are ways to work through mild OCD though and small steps you can incorporate into your daily life to ensure it doesn't develop further.
Take our quiz and read our tailored expert advice to find out if you have symptoms of OCD and what you can do to alleviate them...