Pain on top of my head

Hello everyone! English is not my main language so I'll try my best to explain what's going on to me. Since six months or so I have this pain on top of my head that makes me struggle to live daily. It's a sensation of burning/like bruises on my head. I feel my head is very heavy. When I brush my hair or move my hair it hurts more. I had mutliple exams and they did not find anything on scans. Doctors ended up saying it is because of stress but it sounds like a lot of pain for stress. So far, I can't find anything that help me. Meds for headache/stress/anxiety have no effect.

If anyone can help me know what's happening to me or if anyone has advices on what to do to at least lower the pain I would be very grateful. Thank you a lot!

Edit : I'm 25 years old