Most parents go through hell raising up their adolescent child. Constant vigilance without your childs knowledge should be the way you adopt when dealing with your child who has entered the stage of adolescence. Dealing with mood swings, is a very common problem. Rebellion nature and trying to do what they are not supposed to are some other issues which you have to deal with.
Your adolescent goes through a lot of changes be it mental and physical. Hence they are in a state which is confusing and complex for them. They have a confused identity and they try to act maturely. When dealing with your child you need to be patient as well as understanding. You have gone through this stage and you will know what the problems are which you face during this stage. Show them respect and pay attention to them. Take in his opinions even if you do not take his suggestions. This will help to boost his self esteem.
There are a lot of problems in regards to social adjustment. Listen to his problems and tell him the solutions. Do not spoon feed the solutions, let him find out the answers to his problems. Your child can do outrageous activities which may leave you horrified, but you should rationalize things with him so that he does not repeat the mistakes. Your child may suffer from different types of complex thoughts, behavior but lot of love, care and attention can help to deal with this.