One common cause of hyperprolactinemia is a growth or tumor on the pituitary gland called a prolactinoma. The tumor produces high levels of prolactin. These tumors can be large or small and are usually benign, meaning they are not cancerous. Large tumors can also cause headaches, vision problems, or both.
The most common symptoms of atypical antidepressant withdrawal, including Cymbalta, are anxiety and low mood, such as apathy and rebound depression. Because Cymbalta strongly affects serotonin, after discontinuation it can take several days for the body's own serotonin system to return to normal.
Cymbalta is the brand name for duloxetine, an antidepressant prescribed to treat the symptoms of depression. In addition to depression, doctors can prescribe Cymbalta to treat anxiety that lasts for at least six months, pain from diabetic nerve damage, fibromyalgia, and long-term muscle or bone pain.