Restlessnes is a common phenomenon with many teenagers. This is caused by many factors. Some of these factors are; physical and psychological developmental changes, identity crisis,negative peer pressure, drug or substance abuse,unhealthy relationships,poor academic grades,low self esteem,negative attitude,bullying,sexual/physical violence among others. At times this can come be brought about by the environment at home.
As a parent you should be patient and reach out to your teenage daughter or son with love so that you can learn from them what the problem could be. If your relationship with them is not good you should work on improving it. And if you enjoy good relationship with them,it would be easy for them to be open with you and this way it will be easy for you to identify the issues at hand so that you can you can address them in the right way.
Parents should try as much as possible to be friends with their teenage children because this is a very critical stage in their life. They need to be handled wisely, with great care and love because it is a very delicate and sensitive stage.
Once you carry out your own assessment you can now decide the cause of action.The cause of action should be determined by the nature or the magnitude of the problem. There are are issues that you can handle personally but there are others that may require professional attention. This is where you involve a professional counselor,a psychologist or a medical doctor depending with nature of the problem as I earlier observed.