When you cry, you almost always know why, but when your eyes begin to water on their own understanding the reason may not be so simple. It may be the fault of excess dust in a room, a lint or fragment that has accidentally entered the eyelid, or air pollution (if you are sensitive) or pollen (if you are allergic). Paradoxically, then, among the most common causes of excessive tearing is dry eye syndrome, as those who suffer from it know well. But eye problems or systemic diseases that can interfere with tearing, making it excessive or too little, are numerous:
discover the most common ones here
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Poisonous plants, but not bad ones
To defend themselves against pests, several plant species have
learned in the course of evolution to produce defensive substances of various kinds,
which can also create more or less serious
