Related Clues:

• Preoccupy
• Not have peace of mind
• Fixate (on)
• Raised area on a neck
• Sweat bullets
• Be a worrywart
• Dwell (on)
• Fingerboard feature
• Guitarist's worry?
• Worrisome guitar part?
• Fixate
• Prey on one's mind
• Fingerboard ridge
• Stay awake nights
• Think about too much