The major difference between a psychiatrist and a psychologist is that the psychiatrist can prescribe medicine and has a medical degree. Most insurance companies in the US prefer you to go to a psychologist for therapy and go to a psychiatrist if medication is needed. When I was a teenager, you could easily see a psychiatrist for both therapy and medication. For some reason the usual way of doing things changed to the dual system. Good luck and I encourage you to see someone if you are having a hard time doing everyday things.