Inappropriate or hypersecretion from hypothalamus
Infectious
Brain abscess
Encephalitis, meningitis
Rocky mountain spotted fever
Herpes Zoster
Vascular/hemorrhagic
Stroke, hypoxic ischemic encephalopathy, perinatal hypoxia
Cavernous sinus thrombosis
Subarachnoid hemorrhage
Subdural hematoma
Other
Acute intermittent porphyria
Cerebellar and cerebral atrophy
CNS lupus
Epilepsy, Delirium tremens
Multiple sclerosis, Guillain-Barré<unk> 
Hydrocephalus, ventriculoatrial shunt obstruction
Wernicke encephalopathy
Head trauma
Ectopic ADH<unk>  due to neoplastic source
Lung carcinoma, mesothelioma
Duodenal, pancreatic, and colonic carcinomas
Adrenocortical, bladder/urothelial, ovarian, prostate, and cervical cancers
Brain tumor, leukemia/lymphoma, carcinoid, neuroblastoma, thymoma, Ewing's sarcoma
Pulmonary disorders
Drugs
ADH-stimulating
Acetylcholine, histamine
Antineoplastic agents - Adenine arabinoside, cyclophosphamide, ifosfamide, vincristine, vinblastine
Barbiturates, thiopental, MAOIs, tricyclic antidepressants
Opioids
Haloperidol, phenothiazines
Carbamazepine, oxcarbazepine
Halothane, nitrous oxide
Bromocriptine
Carbachol
Chlorpropamide
Isoproterenol
Nicotine
ADH-potentiating
Griseofulvin
Hypoglycemic agents – Metformin, phenformin, tolbutamide
Oxytocin (large doses)
Indomethacin, aspirin, NSAIDs
Theophylline
Vasopressin analogs (eg, AVP, DDAVP)
Infectious
Brain abscess
Encephalitis, meningitis
Rocky mountain spotted fever
Herpes Zoster
Vascular/hemorrhagic
Stroke, hypoxic ischemic encephalopathy, perinatal hypoxia
Cavernous sinus thrombosis
Subarachnoid hemorrhage
Subdural hematoma
Other
Acute intermittent porphyria
Cerebellar and cerebral atrophy
CNS lupus
Epilepsy, Delirium tremens
Multiple sclerosis, Guillain-Barré<unk> 
Hydrocephalus, ventriculoatrial shunt obstruction
Wernicke encephalopathy
Head trauma
Brain abscess
Encephalitis, meningitis
Rocky mountain spotted fever
Herpes Zoster
Stroke, hypoxic ischemic encephalopathy, perinatal hypoxia
Cavernous sinus thrombosis
Subarachnoid hemorrhage
Subdural hematoma
Acute intermittent porphyria
Cerebellar and cerebral atrophy
CNS lupus
Epilepsy, Delirium tremens
Multiple sclerosis, Guillain-Barré<unk> 
Hydrocephalus, ventriculoatrial shunt obstruction
Wernicke encephalopathy
Head trauma
Lung carcinoma, mesothelioma
Duodenal, pancreatic, and colonic carcinomas
Adrenocortical, bladder/urothelial, ovarian, prostate, and cervical cancers
Brain tumor, leukemia/lymphoma, carcinoid, neuroblastoma, thymoma, Ewing's sarcoma
ADH-stimulating
Acetylcholine, histamine
Antineoplastic agents - Adenine arabinoside, cyclophosphamide, ifosfamide, vincristine, vinblastine
Barbiturates, thiopental, MAOIs, tricyclic antidepressants
Opioids
Haloperidol, phenothiazines
Carbamazepine, oxcarbazepine
Halothane, nitrous oxide
Bromocriptine
Carbachol
Chlorpropamide
Isoproterenol
Nicotine
ADH-potentiating
Griseofulvin
Hypoglycemic agents – Metformin, phenformin, tolbutamide
Oxytocin (large doses)
Indomethacin, aspirin, NSAIDs
Theophylline
Vasopressin analogs (eg, AVP, DDAVP)
Acetylcholine, histamine
Antineoplastic agents - Adenine arabinoside, cyclophosphamide, ifosfamide, vincristine, vinblastine
Barbiturates, thiopental, MAOIs, tricyclic antidepressants
Opioids
Haloperidol, phenothiazines
Carbamazepine, oxcarbazepine
Halothane, nitrous oxide
Bromocriptine
Carbachol
Isoproterenol
Nicotine
Griseofulvin
Hypoglycemic agents – Metformin, phenformin, tolbutamide
Oxytocin (large doses)
Indomethacin, aspirin, NSAIDs
Theophylline
Vasopressin analogs (eg, AVP, DDAVP)
Syndrome of inappropriate antidiuretic hormone secretion
Inappropriate or hypersecretion from hypothalamus
Adrenal crisis
Infectious
Thyrotoxic periodic paralysis
Brain abscess
Diabetic ketoacidosis
Encephalitis, meningitis