Rebounds

I am constantly reading abut rebound headaches and medication overuse.
This is enough to drive anyone nuts. What are you supposed to do?
You take the medication (for me cautiously) to ease the pain and then get told by neuros that you are giving yourself pain from the medication.
I have just gone 4 days with NO medication at all.
Does that mean when the pain gets bad again I am on the rebound??
The increased stress from trying not to take something that just might be making you worse is huge.
But how does it rebound? People take the same medications for arthritis etc and they dont get rebounds (apparently)
And how does it know when to rebound and when not to...
Answers on a postcard please...or on here will do...