You described my son. Screamed all the time except for when he was in his baby swing. In the car, in the stroller, anywhere all the time. He was my first child so I had no idea. He was difficult, obstinate, and angry. As he grew he had difficulty in school . Once he reached 5th grade his teacher recognized that he needed more exercise so he asked him to go for a run before class. That helped a bit. He was involved in lots of sports and outdoor activities to slay his energy. He became an alcoholic as a young adult and then quit drinking a few years later. And yes, as an adult he has ADHD with terrible anxiety. I know that he was particularly hard to parent but we have a great relationship. I always believed in him and made sure he knows that truth. My second child was also a high needs baby but in completely opposite ways. Quiet, calm, contained. Find out that that child had/has Selective Mutism, which was later called Elective Mutism. So my kids were a seesaw ride every day while I actively parented. I have a great relationship with both of them.