Why girls shut themselves down in case of a problem?

Because most of the time I feel like I'm over reacting or something so I don't want them to think I'm just trippin' about stupid stuff.....you know?

I don't like making a big deal out of it.

that's just how I am. I don't know about other girls.

Wow, you're not like most guys I know. I think it's great that you want to know what's wrong.

Not all girls shut themselves up. I for one, ALWAYS let someone know if they hurt me or something is bothering me. Sometimes it takes a while to let it out because I need to think about how to put it in the right words... and sometimes it takes longer because certain situations take a while to sink in so it's hard to react to them. Shutting down is a self-defense mechanism that people use to keep other things from interfering with the problem. The practically drown themselves with the problem until they call for help or find a solution to get passed it.

You can't force someone to open up about what's bothering them. Sometimes people don't like talking about the problem... Give a girl her space, but make sure she knows that whenever she's ready to talk about it, you'll be there to listen.

Whoa you are not like most guys. Most of the guys I know don't want to talk about what is bothering them. They would rather keep it inside and not talk about feelings. I think girls hold it in because of these guys. We are afraid of opening up and having the guy roll his eyes and not take us seriously.
Girls are sometimes very emotional, and I know that when I get upset at something, I take a breather and then if I still feel upset at something I say what's on my mind. It's great that you are taking the time to notice this, because a lot of guys would shrug it off and act like nothing is wrong. Just take the time to let girls know that you want to talk about stuff. Then maybe they will open up more and say what is on their minds.

I think with me, the reason it's hard for me to communicate things and gets me to shut down, as if I don't know what the guy is going to expect or get from what I say. I get scared being not sure. That if I say something wrong, or do something wrong, the guy is going to find what I think or feel or even say could come off as wrong. I worry far too much. Not sure on other girls, but that's why I react that way with things.

Girls think you SHOULD know what the problem is without them telling you. Which makes sense, kinda, given that a couple is supposed to be in the same loop...

Obviously girls and guys communicate differently. Guys talk to exchange information and give solutions while Girls on the other hand like to share feelings (something that doesn't often take place in male conversations).

Like you said: "This is the problem I have noticed and it makes it really difficult for guys to solve the situation." This is a problem because when girls want the boys to simply listen, guys are trying to solve the problem or believe there is a problem when there isn't any. Then it escalates to some stupid banter.

However, when there is a problem. Males generally tell it straight forward while girls hint and beat around the bush. Ex: Males: "Hey dude, stop crying about your broken toe." Female: "ya I know it hurts, my finger bothered me a while back but I didn't try to get everyone to notice it."

Girls aren't anymore complex than guys when it comes to emotion. One expresses it too much before thinking and the other doesn't enough or at all locking such emotions in what Sigmound Freud calls "the unconscious mind" (go school).

No sh*t dude!!! If women would open up more and say what they mean and how they feel, there wouldn't be nearly as many break-ups. My experience has been that women don't let us know that something is wrong until it's too late! I am not the king of communication skills, but when there is something wrong I let my partner know what's up. So many relationships could be saved if we could just communicate better (both men and women).