throat can also originate in the nose and sinuses and drip downward, a phenomenon known as postnasal drip.
Because the underlying causes vary, persistent mucus shouldn’t automatically be assumed to be “just a cold.”
Does Green or Yellow Mucus Mean You Need Antibiotics?
Not necessarily.
A chest infection can produce green or yellow mucus, but mucus color by itself doesn’t tell you whether antibiotics are necessary. Many respiratory infections are viral
and improve without antibiotics.
A healthcare professional can determine whether additional treatment is appropriate.
When Should You Seek Medical
