What causes drooling?

Drooling, medically referred to as excessive salivation, may be caused by the following factors: 1. **Conditioned reflex**: When seeing acidic or appetizing foods, the body may produce a reflex that stimulates the salivary glands to secrete more saliva, leading to drooling. 2. **Emotional tension or anxiety**: In stressful or anxious situations, the body may produce a stress response, resulting in increased salivary secretion and drooling. 3. **Inflammation**: Inflammatory conditions of oral tissues such as gingivitis, periodontitis, glossitis, and pharyngitis may stimulate excessive secretion from the salivary glands, leading to drooling. 4. **Tooth loss**: Tooth loss can impair chewing function, prompting the mouth to produce more saliva to assist in digestion. 5. **Excessive gastric acid secretion**: Conditions such as gastritis and reflux esophagitis can cause excessive gastric acid secretion, which in turn stimulates the salivary glands, causing drooling. 6. **Neurological diseases**: Disorders of the central nervous system or endocrine dysfunction may lead to abnormal secretion from the salivary glands, resulting in drooling.