Sometimes, a sudden increase in tears can be triggered by certain stimuli. Most commonly, this occurs with yawning, but it can also occur with laughing, coughing, or vomiting
. If you notice that your increase in tear production occurs only in this setting, then this is probably a normal phenomenon.
All the other many causes of excess tear production, however, should be evaluated by your primary care doctor
. For example, infections of the eye with either bacteria or viruses can cause increased tear production; there is often also other symptoms like itching or burning of the eye. Similarly, a scratch or ulcer
on the surface of your eye may cause tearing, usually also with pain or blurry vision. Eye allergies (allergic conjunctivitis) are one of the most common causes of excessive tear production. With eye allergies, you may have rednes of the eyes and periodic itching; you may also simultaneously have symptoms of nasal allergies, such as sneezing or nasal stuffiness.
Your primary care doctor will be able to examine your eyes and help figure out which of these potential conditions is going on in your case. Fortunately, for all of these conditions, there are good treatments available, so get in to see your doctor as soon as you can.