Medications and toxic etiologies | Cancer chemotherapy | - Severe – cisplatinum, dacarbazine, nitrogen mustard
| - Moderate – etoposide, methotrexate, cytarabine
| - Mild – fluorouracil, vinblastine, tamoxifen
| Analgesics | | - Nonsteroidal antiinflammatory drugs
| | | Cardiovascular medications | | | | | - Calcium channel antagonists
| Diuretics | Hormonal preparations/therapies | | | Antibiotics/antivirals | | | | | | Gastrointestinal medications | | | Nicotine | CNS active drugs | | | | Antiasthmatics | | Radiation therapy | Ethanol abuse | Jamaican vomiting sickness | Hypervitaminosis | | Infectious causes | Gastroenteritis | | | Nongastrointestinal infections | | Disorders of the gut and peritoneum | Mechanical obstruction | - Gastric outlet obstruction
| | Functional gastrointestinal disorders | Gastroparesis | Chronic intestinal pseudo-obstruction | Nonulcer dyspepsia | Irritable bowel syndrome | Organic gastrointestinal disorders | - Pancreatic adenocarcinoma
| - Inflammatory intraperitoneal disease
| | | | | | | | | | CNS causes | Migraine | Increased intracranial pressure | | | | | | | | | Seizure disorders | Demyelinating disorders | Cranial radiation | Emotional responses | Psychiatric disease | | | | | | | Labyrinthine disorders | | | | | | | Endocrinologic and metabolic causes | Pregnancy | Other endocrine and metabolic | | | | | | | - Acute intermittent porphyria
| Miscellaneous causes | Postoperative nausea and vomiting | Cyclic vomiting syndrome | Cannabis hyperemesis syndrome | Cardiac disease | | | - Radiofrequency ablation of the liver
| Starvation | Radiation therapy to the upper abdomen and lower chest | |