Dilated Pupil

I am 24 years old and my right pupil is larger/dilated in comparison to my left.  I noticed one morning when I looked in the mirror that my pupil was really large compared to my left.  I looked at the light and it was slow constricting.  Ever since my right pupil is somewhat larger than my left. Is this normal?

[Forum-OD-MP]

no.  it needs to be checked out.  you need to go to an eye doctor.

a lot of things can cause a difference in pupil size.  some of the most common are "adie's pupil" and "horner's syndrome".  some of the rare causes are aneurysm & tumor (and others).

"adie's tonic pupil" is IMO the most likely scenario, and is not a big deal.  but w/o having an exam, no one knows whether what YOU have is a benign condition or a serious one.  it needs to be checked out.