progressive familial heart block (Monarch Disease Ontology term MONDO_0019490) is a hereditary cardiac conduction disorder that may progress to complete atrioventricular (AV) block. The disease is either asymptomatic or manifests as dyspnea, dizziness, syncope, abdominal pain, heart failure or sudden death. Also known as: PFHB, familial Lenegre disease, familial Lenègre disease, familial Lev disease, familial Lev-Lenegre disease, familial Lev-Lenègre disease, familial PCCD, familial progressive heart block.