I have tightness/heaviness feeling on crown of head whenever i lift my head up from a lying position. was assaulted on head over a month ago. normal?

Please check it out: You need to be checked out by a doctor to make sure that you did not suffer a serious injury to the face of the brain from the assault.

As per Dr Alshaar: Not normal. Also may need the neck examined as well as this can be injured during an assault to the head and can be a cause of ongoing headache. Please get yourself checked out.

Possible: But a month is a long time. You may want to see your md