Stress Polycythemia, also known as polycythemia, emotional, is related to polycythemia and splenomegaly. An important gene associated with Stress Polycythemia is FIP1L1 (Factor Interacting With PAPOLA And CPSF1), and among its related pathways/superpathways are Signal Transduction and Development Angiotensin activation of ERK. Affiliated tissues include lung, and related phenotypes are hypertension and hypercoagulability