Inability to control tears may be related to keratitis, tear duct abnormalities, dacryoadenitis, etc. 1. Keratitis: Pathogenic microbial infections, trauma and other causes can lead to keratitis. This leads to redness, swelling, pain and other symptoms in the eyes. At the same time, the local inflammation will produce stimulation of the lacrimal gland, so the phenomenon of uncontrollable flow of tears can occur. 2. Abnormalities of the tear ducts: When the tear ducts are narrowed or blocked, the poor drainage of tears can cause uncontrollable tears, which requires timely medical treatment. 3. Dacryoadenitis: Dacryoadenitis can be caused by infection of the lacrimal gland with germs or immunity. This can lead to symptoms such as swelling, pain, and tearing discomfort in the lacrimal gland, which can lead to an uncontrollable flow of tears. If you are experiencing uncontrollable tears, it is recommended that you go to the hospital to get a clear picture of the cause of the problem and get targeted treatment.