How can you tell if a girl has HIV, Herpes, Crabs, ETC ETC?

how can you tell if a girl has any sort of sexual disease? like HIV, Herpes, Crabs etc you know those kind.

I know you wont be able to tell since these disease dont have symptoms but what about their physical appearance? Will they be depressed? will they be not talkative and shy??.... plz i need answers

omg...oops i put this in the wrong section....it was meant to go in disease and conditions - HIV...

No, you generally cannot tell if someone has an STD by their physical outward appearance or personality.
Use a condom and decrease your chances of contracting one, because its more likely they don't know about it if they have it.

Sounds like a bad rap song.

use protection or keep it in your pants....

They will look nasty

you can't tell, any more than the girl can tell if you have any problems, ....if you are concerned do not go for it or use protection.. sorry but there is no way to tell unless she said she has some problems.