What causes eyes to be bloodshot?

Question

One of my eyes are bloodshot and it hurts. i dont know what caused it..

or its pink eye... but its red and feel dry

Answer 1

Too much caffeine or not enough sleep, or poking your eye.

Answer 2

Here are the diseases.
Eyestrain
Fatigue
Polycythemia - bloodshot eyes
Queensland tick typhus - bloodshot eyes
Red eye
Sandfly fever - bloodshot eyes
Sarcoidosis - bloodshot eyes
See also causes of red eyes
Subconjunctival hemorrhage
Toxic Shock Syndrome - Bloodshot eyes
Yellow fever - bloodshot eyes

And here are the drug side effects.
The following drugs, medications, substances or toxins are some of the possible causes of Bloodshot eyes as a symptom.

Metaxalone
Sildenafil
Skelaxin
Viagra

Now would you please answer mine?
http://answers.yahoo.com/question/index;_ylt=A9FJujanu1BG90cBVQbsy6IX?qid=20070518194124AAtSmrV

Answer 3

The following medical conditions are some of the possible causes of Bloodshot eyes. There are likely to be other possible causes, you should ask your doctor about it.

Eyestrain
Fatigue
Subconjunctival hemorrhage

Also if you have red eyes, sometimes you make have bloodshot from your eyes

Answer 4

Bloodshot eyes appear red because the vessels in the surface of the white portion of the eye (sclera) become enlarged and irritated. This may result from extremely dry air, sun exposure, dust, foreign body, an allergic reaction, infection, trauma, or other conditions.

One common cause of a red eye is straining or coughing. This can lead to a bright red, uniformly dense bloody area on the sclera. This is called a subconjunctival hemorrhage. Although this bloody area may appear alarming, it is a fairly common occurrence and of little significance. If you notice a bloody blotch in one eye that doesn't hurt, but just looks bad, don't worry. It generally clears up on its own within a week or two.

Eye infections or inflammation can occur in different locations. They cause redness as well as possible itching, discharge, pain, or vision problems:

* Blepharitis -- inflammation of the eyelash follicles along the eyelid. It is caused by skin bacteria. Itching is common and your eyelids may appear greasy or crusty.
* Conjunctivitis -- inflammation or infection of the membrane that lines the eyelids and coats the surface of the eye (the conjunctiva). This condition is often referred to as "pink eye". It may be caused by a virus, bacteria, allergy, or irritation. If caused by an organism, this is highly contagious.
* Corneal ulcers -- often caused by a bacterial or viral infection. (The cornea is the outer covering of the eye.)
* Uveitis -- inflammation of the uvea, which includes the iris, ciliary body, and choroid. This is often related to an autoimmune disorder, infection, or exposure to toxins. Often, only the iris is inflammed, which is called iritis.

Other potential causes include:

* Cold or allergies causing redness in both eyes.
* Foreign objects in the eye that cut or damage the eye. (See eye emergencies.)
* Acute glaucoma -- a sudden increase in eye pressure that is extremely painful and causes serious visual disturbances. This is a medical emergency. Most times, glaucoma is chronic and gradual.
* Corneal scratches caused by sand, dust, or overuse of contacts.
* Bleeding problems (for example, from excess use of blood thinning drugs).

Answer 5

Lay off the Mary Jane dude. Nah just playing but it migh tbe pink eye or just something small. A few months ago my left eye was pink and felt a little dry. After a week or so it just went back to normal. If it hasn't recovered after two weeks I suggest you go see a docter.

Answer 6

One of the vessels in your eye burst making your eye bloodshot.
It could be caused by sitting too close too the tv for too long, or rubbing it excessively, not enough sleep, etc.etc.

Answer 7

Put a warm wash rag on it and hold it there for a few minutes and do this at least 4 times a day you may have scratched your eye somehow something may have gotten in it and rubbing may have irritated it. it if it doesn't get any better go see an eye DR.

Answer 8

Sounds like you may have an infection (such as pink eye). Go to the doctor & he'll give you some prescription drops.

Or, it could be allergies, but unlikely if only one eye is affected.

Answer 9

It's called dry eyes, also too much beer.

Answer 10

One person was like that and that was because he was coughing really hard and alot....I think pink is is like pinkish and it's like not really able to be opened. Good luck with that.