Nausea and vomiting
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DDx
Infections
- Norwalk or rotavirus
- "Food poisoning" by toxins from B. cereus, S. aureus, C. perfringens
- Hepatitis A or B
- Meningitis or encephalitis
- Acute systemic infections
Hepatobiliary or pancreatic disease - Acute pancreatitis
- Cholecystitis or cholelithiasis
Topical gastrointestinal irritants - Alcohol, NSAIDs, oral antibiotics
Systemic drugs - Antitumor chemotherapy
- Alcohol
- Calcium channel blockers
- Opioids
Mechanical obstruction - Gastric outlet obstruction: peptic ulcer disease, malignancy, gastric volvulus
- Small intestine: adhesions, hernias, volvulus, Crohn's disease, carcinomatosis
Dysmotility - Gastroparesis: diabetic, medications, postviral, postvagotomy
- Small intestine: scleroderma, amyloidosis, chronic intestinal pseudo-obstruction, familial myoneuropathies
Peritonitis - Perforated viscus
- Appendicitis
- Spontaneous bacterial peritonitis
Vestibular disorders - Labyrinthitis, Ménière's disease, motion sickness, migraine
Increased intracranial pressure - CNS tumors
- Subdural or subarachnoid hemorrhage
Psychogenic - Anticipatory vomiting
- Bulimia
- Psychiatric disorders
Other - Myocardial infarction, hypercalcemia, kidney stones, pyelonephritis, diabetic ketoacidosis, uremia, pregnancy, radiation therapy, adrenal crisis, parathyroid disease, hypothyroidism, paraneoplastic syndrome
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DDx
Infections
- Norwalk or rotavirus
- "Food poisoning" by toxins from B. cereus, S. aureus, C. perfringens
- Hepatitis A or B
- Meningitis or encephalitis
- Acute systemic infections
Hepatobiliary or pancreatic disease - Acute pancreatitis
- Cholecystitis or cholelithiasis
Topical gastrointestinal irritants - Alcohol, NSAIDs, oral antibiotics
Systemic drugs - Antitumor chemotherapy
- Alcohol
- Calcium channel blockers
- Opioids
Mechanical obstruction - Gastric outlet obstruction: peptic ulcer disease, malignancy, gastric volvulus
- Small intestine: adhesions, hernias, volvulus, Crohn's disease, carcinomatosis
Dysmotility - Gastroparesis: diabetic, medications, postviral, postvagotomy
- Small intestine: scleroderma, amyloidosis, chronic intestinal pseudo-obstruction, familial myoneuropathies
Peritonitis - Perforated viscus
- Appendicitis
- Spontaneous bacterial peritonitis
Vestibular disorders - Labyrinthitis, Ménière's disease, motion sickness, migraine
Increased intracranial pressure - CNS tumors
- Subdural or subarachnoid hemorrhage
Psychogenic - Anticipatory vomiting
- Bulimia
- Psychiatric disorders
Other - Myocardial infarction, hypercalcemia, kidney stones, pyelonephritis, diabetic ketoacidosis, uremia, pregnancy, radiation therapy, adrenal crisis, parathyroid disease, hypothyroidism, paraneoplastic syndrome
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