6 hours agoShareSaveNick TriggleShareSaveGetty ImagesLucy says she’s always been a bit of worrier, but two years ago she began to get anxious and started having panic attacks.”I didn’t know what was happening and my parents didn’t either,” says the 15-year-old. “It was scary. The attacks would occur without warning. It got worse and I began to have them in public.” Lucy started missing a lot of school and stopped socialising. She says it was hard for her parents to see her struggling. “We didn’t know what to do or where to go.”For six months, she tried to manage her anxiety herself, but eventually the family decided to pay for a talking therapy called cognitive behavioural therapy.Lucy says it has made a huge difference. While she still has panic attacks, they are much less frequent and she is back attending school and doing the things she enjoys.Lucy’s story is far from unique. NHS figures suggest one in five children and young people aged eight to 25 has a probable mental health disorder.Why problems are so commonThe teenage years are when problems become increasingly common as young people grapple with the challenges of growing up, exam stresses, and friendships and relationships.There are biological reasons too that make emotional health problems more likely, says Prof Andrea Danese, an expert in child and adolescent psychiatry at King’s College London.”Teenagers’ brains don’t develop all at once. The part that processes emotions matures earlier than the part responsible for self-control and good judgement. This means young people can feel things very intensely before they’ve fully developed the ability to manage those feelings, which helps explain some of the emotional ups and downs parents often see.”The zenith, he says, is adolescence, when emotional reactions are further heightened by hormones and changes to the internal body clock which impact sleeping patterns.When and how to helpSo, what constitutes normal emotional challenges – and when should teens and their parents be worried and consider seeking professional help?Prof Danese says he understands why many find this difficult to judge. He considers the following as normal teenage emotional traits:Periodic irritability and moodinessOccasional social withdrawal or desire for privacyAnxiety about social acceptance or academic performanceExperimenting with identity and independenceEmotional reactions that seem disproportionateProviding these are not interfering too much with daily activities, parents should feel able to support their children, he believes.The most common problems teenagers experience are low mood and anxiety. For low mood, Prof Danese says, maintaining healthy routines around eating, sleeping, being active and keeping in touch with friends and family is important as is planning activities that your child enjoys, such as trips out or playing a sport.”And help them identify, break down and try out solutions for problems that may have arisen,” he adds.For anxiety, calming techniques are helpful, he says. These can include breathing exercises, grounding, whereby you concentrate on the environment around you and what you can see, touch and smell, and mindfulness activities.”It’s important to avoid the trap of providing unnecessary reassurance,” Prof Danese says. Instead, alongside teaching calming techniques, parents should discuss and test out feared situations. “To reduce worries, it can help to write them down or talk about them at a special ‘worry time’ once a day.”Building resilienceStevie Goulding, who runs the paren …