bluehaven, what you are experiencing with your son is much more common than you think. Just last week another friend of mine told me about her son punching holes in walls, having uncontrollable rages and threatening her. I now know of 6 teenaged boys and 1 girl who do or have done this (just in my own circle of friends and acquaintances) - and I would be willing to bet there are more I don't know about, because this is such a taboo subject.
My own son has made 5 or 6 holes in our walls, kicked in a door, broken glass in two external doors, smashed up countless small objects in anger, threatened me, hurt me (minor injuries from pushing and throwing things at me), self-harmed (by scratching himself) once, and harms himself and risk-takes in other ways (e.g. taking drugs).
I felt a huge sense of shock and shame and guilt and confusion and powerlessness when it first started happening with my own son, so I didn't tell anyone else for quite a while, and tried to deal with it on my own. I now find that it is much better to tell people - not everyone in the world, of course, but people who may be able to help, and friends, and parents I suspect may have had similar experiences. If you have friends who have teenage boys the same sort of age or older, you may well find they have the same kind of problems.
Just because it is common does not mean it is 'normal' - you do need to take action, although I agree with beagreassive - don't expect a 'quick fix'. :(
Here are the things I'd suggest, based on what I have found especially useful myself:
- Talk about it. As well telling people (as I described above) I arranged some counselling for myself.
- Find some counselling for your son. But don't pin too much hope on it. It is very hard to arrange in the first place, and many teens don't want to or can't engage in it. (We were told by CAMHS that my son did not reach the 'threshold for intervention', and then by another counsellor that my son did not 'need' more counselling after two sessions).
- Draw some clear boundaries. Decide what is unacceptable behaviour and challenge it, always. This is difficult to do, especially at first IME when everything feels so shocking and unacceptable, and you may find yourself trying to stop things that you just can't stop. For me, it was important to realise that there were some things I couldn't stop but I could still challenge - so for instance, I couldn't stop my son swearing at me when he was angry, but I could always say "Please don't talk to me like that - it's not OK for you to swear at me".
- Do not tolerate violence or threats of violence, ever. You deserve to be and feel safe. Hurting you and threatening you or himself with a knife are definitely not ok. Tell your son that if he is violent again, or threatens you, you will call the police. And do it. I called 999 on my son three times, and on the third occasion I had him arrested and charged (for assault and criminal damage). He has not threatened me since.
- Look after yourself. It took me a long time to work this one out (despite people telling me) because I was focussed on 'fixing it' for my son. But in the end I had to accept I could not control or change his behaviour, but I could change mine. I am much better able to cope and react well if I am doing nice things for myself regularly. For me these 'nice things' include coffee with friends, going swimming, walking in the sunshine, making things/craft - but you will have your own things that make you happy. These things are not 'treats', they are essential coping strategies.
- Read this book to help you understand how teenage minds work!
There is some good advice on the Young Minds website and the NHS Choices website.
Keep posting here, especially if you don't feel you can talk about it to people in real life, because it does help to realise you are not alone!