Erythrocytosis, Familial, 1, also known as primary familial and congenital polycythemia, is related to erythrocytosis, familial, 7 and erythrocytosis, familial, 8, and has symptoms including dizziness, fatigue and headache. An important gene associated with Erythrocytosis, Familial, 1 is EPOR (Erythropoietin Receptor), and among its related pathways/superpathways are Signal Transduction and TGF-Beta Pathway. The drugs Immunologic Factors and Adjuvants, Immunologic have been mentioned in the context of this disorder. Affiliated tissues include spleen and heart, and related phenotypes are fatigue and abnormal hemoglobin