Other causes include surgical procedures, hormone deficiencies (hypopituitarism, hypothyroidism), hormone treatments (vasopressin, desmopressin, oxytocin), HIV, pulmonary conditions (e.g., pneumonia), and central nervous system disorders (CNS) (stroke, hemorrhage, infections, trauma, mental health disorders, and psychosis) [10,11,14,15,16]. This evidence concerns the gene OXT and pneumonia.