A person who overreacts to every little problem is an example of someone who might be described as histrionic.
A person with acting talent is an example of someone who might be described as having a histrionic talent.
A temper tantrum and a screaming fit are both examples of histrionics.
Origin of histrionic
- Late Latin histriōnicus from Latin histriō histriōn- actor probably of Etruscan origin
From American Heritage Dictionary of the English Language, 5th Edition
- From Late Latin histriōnicus (“pertaining to acting”), from Latin histriō (“actor”).