What does the phrase " highly strung " mean?

Question

What does the phrase " highly strung " mean?

Answer 1

To me it would mean "breaking the straw on the camel's back" , Or really stressed out, to the point of breaking. Ha, Using a metaphor to decipher another metaphor.

If someone were to say that about a guitar, however, it usually means the strings are close to snapping or  "dead strings" . Either that, or they are ear-splittingly out of tune.

Hope this helped~

Answer 2

Generally used to refer to someone that is tense all the time, and if anything goes wrong in their little world they can go off one way or another - get upset or hysterical, have a tantrum, etc.