My husband is complaining of tenderness and soreness in the crown of his head, which is causing an ongoing nagging pain. what could this be? thank you

Several things: This is a problem that necessitates a face-to-face meeting with your doctor. This will allow him/her to examine you, ask specific questions. And possibly order tests to find out what's wrong and what to do to help you.

Get checked: The short answer is it could be a number of things. If taking an analgesic like Aspirin or Ibuprofen doesn't help then he should see a doctor to get a proper diagnosis.