You’ve had a lot of really good advice already, but I didn’t want to just read and run. My eldest DS has OCD and severe anxiety, mostly around the areas of poisons, toxins, contamination and health. Local CAMHS were beyond hopeless, so we ended up having to pay for both a private Psychiatrist and Clinical Psychologist, which nearly bankrupted us, but was worth it.
His OCD was at it’s worst across his GCSE’s and A’ Levels, possibly due to the stress levels amplifying his anxiety. At the time he was convinced he was going to die as a result of exposure to something in the environment, so like your son, he couldn’t see a future worth fighting for and was unable to focus on his exams.
DS also has ASD, which made engaging with the therapy very difficult and he was unable to do the necessary CBT. The game-changer for him was going onto Sertraline, which he still takes a high dose of daily.
He’s now almost 21, doing well in his first job and has taken up a hobby which his very mindful. He still has OCD, but he manages it at a level where he can have a life and see a future for himself. He’s still very avoidant of things that he perceives as a danger to his health and it can cause problems in certain situations, but he is a million miles away from the state he was in a few years ago.
I feel for you both, what you are going through is pure hell and very hard for people who haven’t been through it to understand. OCD is the worst bully in the world and it doesn’t just bully the person who has it, but everyone that loves them as well. Please try and get some support for yourself as well as for your DS. (I learned how important this is the hard way.)
I just wanted to post and give you some hope that it won’t always be this bad, it can get better. When I was where you are, I honestly couldn’t believe that, but here we are. DS is actually happy and life at home is, for the most part, calm and settled. I wish you and your DS all the very best and hope his upcoming appointment sets him on the path to recovery.