Approximately threemonths ago,i banged my head very hard on a upvc ledge.About two weeks after that,I started getting a burning sensation on my scalp and a feeling of intense pressure inside my head.After seeing several different doctors,I was told that it was tension headaches and given propanolol by my gp however this has caused me to become short of breath and i now have a crawling sensation on my scalp as well as sporadic chest pain/back pain all my test results have been normal but i feel very unwell most days and dont feelmyself at all.what could be causing the head sensation? i have an enlarged lymph node on my neck which my gp has examined and i have to go back in 2 weeks,it does seem to be going down now though.i have noticed a couple of spots at the nape of my neck too.