Sometimes a combination of the two can coexist. The tears are produced by numerous glands present on the insides of the eyelids.
Tears then drain into the nasal cavity.
Two conditions leading to obstruction of this tear drainage system are discussed here. Other conditions capable of causing tearing and discharge that are discussed on other pages of this Symptom and Diagnosis section are listed below with possible distinguishing features. The affected eye or eyes have to be frequently wiped throughout the day as the tears drain onto the skin. Often the skin itself becomes irritated and red from the wiping. Sometimes the tears can drain out at very inappropriate times during social encounters.