Why do my eyes tear for no reason?

Why do our eyes tear up when we're upset? And why do our noses run? I was thinking about it, and wondered if there was a specific reason.

I gave birth to beautiful baby girl 2 weeks ago and for some reason every time she wakes up from nap or sleep she has a lot of boogers around her eyes, sometimes her eyes are shut closed. I asked her doc and she said its normal for newborn babies cuz...

My eye vision is not good for my age (18). I can see things that are close, but things that are far becomes extremely blurry. However, I realize that my far sight becomes focused to the point where I can even see someone's eyes from a distance when my...

I have a severe cold right now and for some reason that I don't understand my eyes are pouring! I usually can put up with being sick and going to school and stuff but I can't go anywhere right now because I don't trust my driving with blurry eyes? typing...

Hello there! I'm 19 and around 3 years ago I've experienced a change in my health. I have dry eyes and mouth. Had my saliva checked, bad quality (really sour) and too low amount (but no inflammation was found at my salivary glands). Eyes: I produce enough...

So today, in my trigonometry class, I my seat was moved to the last row. Surprisingly, everything on the board was blurry. It's not like I couldn't see the board but like the writing was like fuzzy and squished together if you know what I mean. Hard...

My cat scratched me for no reason yesterday on the side of the eye, past the tear duct and I want to know, why do they aim for your eyes??

I am a freshman in college and many times when I have to talk to an older person, someone in authority, or a stranger my eyes begin to tear up and I cry intensely. I can not think oh any reason for this. The other day I was at an event not related to...

Ok so first off a few people may find this offensive, but I don't mean to, I am just a little confused as to why this is. So yesterday I was thinking, and it suddenly came to me, nearly all of my friends would be considered strange. And also today, I...