Pink eye can be caused by allergies or an infection. Prostock-Studio/Getty Images Pink eye is a catch-all term for multiple kinds of conjunctivitis that may be caused by irritants, viruses, bacteria, ...

Conjunctivitis can occur due to bacterial or viral infection or an allergic reaction. People often refer to bacterial or viral conjunctivitis as pink eye. Infectious and allergic conjunctivitis have ...

Allergic conjunctivitis is not contagious, but other types of conjunctivitis, such as viral or bacterial, are. People can take steps to prevent transmission of the contagious types. These steps ...

The only way to accurately distinguish between allergies, viral conjunctivitis (like COVID), and bacterial conjunctivitis is to be evaluated by an eye doctor. While many of the previous strains of ...

Oral second-generation antihistamines are considered first-line therapy for allergic rhinitis but are not indicated for nonallergic vasomotor rhinitis. 1 Intranasal antihistamines can also be ...

Dry eyes and eye allergies often share symptoms, but you can tell them apart by looking for specific signs. Eye allergies typically cause itching and swelling, while dry eyes do not. If you’re ...

Causes of bloodshot eyes include allergies, conjunctivitis, or glaucoma. Treatment for bloodshot eyes may involve antihistamines and eye drops. Signs to seek medical attention include eye discharge, ...

The 2026 allergy season could be worse this year for those with seasonal allergies and allergic diseases due to a record warm start to spring.

This story is part of a series on the current progression in Regenerative Medicine. This piece is part of a series dedicated to the eye and improvements in restoring vision. In 1999, I defined ...