Carleton-Nathan says yellow, green, red, pink or brown mucus is not an immediate cause for alarm. Even dark yellow snot does not usually warrant a trip to the doctor. “In general, darker color ...

Medically reviewed by Mary Choy, PharmD Thick mucus in the throat, also known as catarrh, is a symptom that often results ...

A lot of people think yellow or green snot means you need an antibiotic. That is not true. Laura Martin, MD, MPH If it's a viral infection causing the yellow or green snot, yellow in particular is ...

Julia Calderone wrote an earlier version of this post.

After they’ve done their job and die, they’re flushed out of your body with your mucus, and in the process can dye it yellow ... Your mucus can turn green from the even larger build-up ...