Too much thinking or obsessing about a topic can also deplete the spleen, causing a stagnation of its qi. A person with this condition may exhibit such symptoms as poor appetite, forgetting to eat, and bloating after eating. In time, the person may develop a pale complexion from a deficiency of spleen qi. This can eventually affect the heart, causing the person to dream about the same subjects at night. Students are often affected by this imbalance; the standard treatment is use of herbs that tonify heart blood and spleen qi.