Goodmorning doctor, first off all, when I tap on my forehead is sounds hollow, also, tightening of the scalp and I am struggling to dream or maintain images in my head, I have a discomforting feeling behind my right eye and regular head aches do acur like the head aches associated with dehydration (like having a hangover of alcohol). I also experience muscle twitches but am not sure if it is related or not. I don t drink a lot of caffeine but I do smoke. I am 25 years old and find these symptoms odd. I don t exercise alot. All of these symptoms are not chronic but happened decently. I also see that I bruise more easily and takes longer to heal, example popping a pimple might leave a nasty mark. Please give advise to what might be wrong.