Highlight duplicate rows based on column A but be case sensitive

I'm looking to highlight duplicate rows of data based on column A.

The comparison must be case sensitive.

So
blah
blah
are duplicates

Blah
blAh
are not duplicates.

Currently I can use the default conditional formatting function to find duplicates. However it is not case sensitive. Regardless of upper or lower case, if the exact phrase is there it thinks they are duplicates.

Is there a method to also search for duplicates and highlight them but take in to account the case as well?

Thx

Hey, I learned something new.

Assume your values run from A2:A5000:

Highlight Cell A2, choose Conditional Format -> Based on Formula

=1/EXACT($A$2:$A$5000,A2)

Choose a fill color, hit Okay.

Use Format Painter and copy downwards as far as needed


As far as using Control+F to search for duplicates, just click the advanced tab and just click "match case" if you want to do it manually.