A rare multi-system disease characterized by markedly impaired extracellular fibrinolysis leading to the formation of ligneous (fibrin-rich) pseudomembranes on mucosae. The disease is hypoplasminogenemia (Monarch Disease Ontology identifier MONDO_0009009). Also known as: plasminogen deficiency type 1, plasminogen deficiency, type 1, plasminogen deficiency, type I, type 1 plasminogen deficiency.