3 doctors weighed in:

I can't tell if I have conjunctivitis or allergies?

3 doctors weighed in
Dr. Matheson Harris
Ophthalmology
2 doctors agree

In brief: Onset and duration

Allergies usually begin in both eyes simultaneously, causing itching and some tearing.
They may cause mild redness. There are many kinds of conjunctivitis, but most start on one side, then may spread to the other in a day or two. See an ophthalmologist for a physical exam and further recommendations.

In brief: Onset and duration

Allergies usually begin in both eyes simultaneously, causing itching and some tearing.
They may cause mild redness. There are many kinds of conjunctivitis, but most start on one side, then may spread to the other in a day or two. See an ophthalmologist for a physical exam and further recommendations.
Dr. Matheson Harris
Dr. Matheson Harris
Thank
Read more answers from doctors