What is the medical term meaning abnormal flow from the nose?

Answer 1

Rhinorrhagia (rhino = nose + rrhagia = burst forth) is excessive bleeding from the nose. Another term to use is "epistaxis" (epi = up on + staxis = let fall in drops).

90% of the nosebleeds are from the anterior (front) part of the nose, and are easy enough to control. The remainder are posterior and may need a physician's intervention to control. The most common causes of a bleeding nose are [1] blunt trauma, [2] foreign bodies and [3] inflammatory reaction.

Answer 2

Rhinorrhea is the general term for fluid coming out of the nose quickly, though there are some specialized terms if you want to talk about a particular fluid.