- Sty (hordeolum)
A stye is a tender, pimple-like red bump on the eyelid caused by a bacterial infection.
- Pink eye (conjunctivitis)
Pinkeye is redness and swelling of the membrane that lines the eyelid, called the conjunctiva.
- Hay fever
Hay fever, an allergic reaction to outdoor pollens and molds, causes nasal congestion, itchy eyes, and more.
- Allergic reaction
Allergic reaction causes sneezing, runny nose and hives and can lead to anaphylaxis, a whole body reaction.
- Contact lens use
Wearing contact lenses instead of glasses can sometimes cause eye discomfort, irritation, or infection.
- Rubbing eyelids
Rubbing your eyelids can make the skin on your eyelids look red and, over time, can cause then to thicken.
- Eyelid inflammation (blepharitis)
Blepharitis, an inflammation of the eyelids, causes redness, irritation; and itchy, crusty eyelids.
- Eye allergies
Eye allergies, or allergic conjunctivitis, can make your eyes itchy, red, and watery.
- Lyme disease
Lyme disease is a bacterial infection spread through tick bites; symptoms include rash, fever chills, and more.
- Dry eyes
Symptoms of dry eyes include a gritty sensation, pain, light sensitivity, eye redness, burning, and stinging.