What could be wrong with my eye? it's swollen and real itchy but only in one eye

Conjunctivitis: You could have an eye infection or inflammation. This could be caused by either an allergic reaction or a bacterial infection. See your dr. For an eval.

Conjunctivitis: Unilateral conjunctivitis can occur if only one eye is exposed to an allergen; however, other causes of non resolving unilateral conjunctivitis include bacterial infections some of which can be sight threatening. Only an ophthalmologist would be able to distinguish an allergic conjunctivitis from an infectious cause. Otc medicines such as ketotifen can provide temporary allergy relief.

A few possibilities: This could be due to allergies, dry eyes, or eye infections. All can start or affect 1 eye first. The treatments are very different. For allergies, zaditor (ketotifen) is a good otc eye medicine. For dry eyes, lubricating tears are necessary. For infection, usually of the eyelids, start with eyelid warm compress and diluted baby shampoo scrubs. You should have a baseline exam with your eye doctor.