Abstract: Introduction: Prolactin (PRL) is an immune stimulating hormone and may be important in the pathogenesis of some autoimmune diseases, such as SLE. This study was designed to detect the PRL level in patients with Behcet's disease (BD), and its relation to the different manifestations of the disease. Materials & Methods: Thirty-seven new male patients with BD and 29 age matched control normal individuals (CON) was selected as every consecutive patient. The ...