<Tr> <Td_colspan="2"> Labeled cross section of the nasal cavities </Td> </Tr> <Tr> <Th> Specialty </Th> <Td> Otorhinolaryngology </Td> </Tr> <P> Rhinorrhea or rhinorrhoea is a condition where the nasal cavity is filled with a significant amount of mucus fluid . The condition, commonly known as a runny nose, occurs relatively frequently . Rhinorrhea is a common symptom of allergies (hay fever) or certain diseases, such as the common cold . It can be a side effect of crying, exposure to cold temperatures, cocaine abuse or withdrawal, such as from opioids like methadone . Treatment for rhinorrhea is not usually necessary, but there are a number of medical treatments and preventive techniques available . </P> <P> The term was coined in 1866 and is a combination of the Greek terms rhino - ("of the nose") and - rhoia ("discharge" or "flow"). </P>

Medical term for flow or discharge from the nose