Once I "learned" for a condition in which you have a specific solution of a problem, but you are only thinking of it and do not realize there are other / probably more appropriate / solutions. Something like.. being stuck to an attempt of a solution.
So there was a name for it. But google results for tokens such as "Problem Solving Disease" lead me to nothing related.
This is called the Einstellung effect:
...Einstellung refers to a person's predisposition to solve a given problem in a specific manner even though "better" or more appropriate methods of solving the problem exist
It is related to the idea of functional fixedness:
Functional fixedness is a cognitive bias that limits a person to using an object only in the way it is traditionally used. `
