never-endingheadache
nounUK /ˌnevər ˈendɪŋ ˈhedeɪk/
US /ˌnevər ˈendɪŋ ˈhedeɪk/
A headache that feels like it will not stop.
After staring at the screen all day, I had a never-ending headache.
OTHER MEANINGS
2. A problem that seems impossible to solve.
Fixing the old car turned into a never-ending headache.
3. A person or task that keeps causing trouble.
The broken printer is a never-ending headache for the whole office.
4. A feeling of worry that does not go away.
Waiting for the test results was a never-ending headache.