bleeding diathesis due to thromboxane synthesis deficiency (MONDO_0800446, a Monarch Disease Ontology entry) is a rare, genetic, isolated constitutional thrombocytopenia disease characterized by impaired platelet aggregation resulting from a defect in thromboxane synthesis or signaling, manifesting with mild to moderate mucocutaneous, gastrointestinal or surgical bleeding (e.g. easy bruising, prolonged epistaxis, excessive bleeding after a tooth extraction).