Primary Polycythemia, also known as familial erythrocytosis, is related to polycythemia vera and erythrocytosis, familial, 8, and has symptoms including dizziness, fatigue and headache. An important gene associated with Primary Polycythemia is VHL (Von Hippel-Lindau Tumor Suppressor), and among its related pathways/superpathways are Cellular responses to stimuli and Cytokine Signaling in Immune system. The drugs Lactitol and Pharmaceutical Solutions have been mentioned in the context of this disorder. Affiliated tissues include heart and brain, and related phenotypes are Increased shRNA abundance (Z-score > 2) and growth/size/body region