PRL and systemic lupus erythematosus: Furthermore, in a case report, hyperprolactinemia was found in a patient with multiple autoimmune diseases (Jaccoud’s arthropathy, urticarial vasculitis, systemic lupus erythematosus, and Sjögren’s syndrome) [90], correlating with the 20% of patients with SLE that present increased serum levels of prolactin [90,113].