I'm on steroids, so my SHBG is low. I've experimented with DHT, mesterolone and Arimidex to manage estrogen, and I'm currently using a progesterone cream. I don't have a tumor. My prolactin level is fine now, but it was twice as high as normal before I used Dostinex to lower it, and it was without a doubt caused by estrogen. Some people with PFS, believes that masturbation caused the condition to get worse, so prolactin is definitely involved in more cases. However, I may have another problem with dopamine, as I have had a problem with restless legs syndrome the last months. It affects my legs and arms, at night.